100 in 100: Sandy Brock- Day 87

Mike Collette • September 1, 2026
Prototype Training Systems Presents
100 IN 100
Member Stories
100 Days · 100 Stories
Day 87 of 100

Sandy Brock

1,979 sign-ins. 155 straight months. Still setting PRs at 66.
She was 53, out of shape, and knew nobody in the room. She was sore for months and some mornings questioned whether she could get out of bed. Seven times in her story, she wrote the same four words: I kept coming.
Sandy Brock pulling a deadlift at Prototype Training Systems in Westborough, MA, thirteen years into her membership
1,979
Lifetime Sign-Ins
155
Months With a Sign-In
45 → 156
Back Squat, lb
53 → 66
Age Then → Now

In August of 2013, a fifty-three-year-old civil engineer who was commuting to Boston every day walked into our 7:30 PM class. She was not in great shape and she'll tell you that herself. She didn't know anyone. She had tried working out on her own before and it had never held, because motivation, in her words, was always in short supply.

Thirteen years later, Sandy Brock has signed in to 1,979 classes.

When she wrote her story for us, one phrase kept surfacing. She used it seven times. It isn't a slogan and she wasn't trying to be clever with it. It's just the truest thing she could say about how she got here.

"To say those first few months were humbling would be an understatement. Every workout seemed to introduce muscles I didn't know existed. Some mornings, I genuinely questioned whether I'd be able to get out of bed. But I kept coming."

— Sandy

Before the gym

Sandy grew up in Southborough, the youngest of nine children. Seven older brothers, one older sister. Her father was Southborough's Fire Chief, following his own father into the job. She earned a degree in Civil Engineering from UMass Lowell, back when it was still U Lowell, worked for a few local firms, and then took what she calls the path less traveled and joined the Peace Corps. From 1992 to 1994 she lived and worked in Malawi, an experience she says permanently broadened how she sees the world.

She came home, joined Nitsch Engineering, and has spent her entire professional career there. Retirement, she says, may be on the horizon. She's not quite done yet.

That's a full life. Nine siblings, an engineering degree, two years in Africa, a career. What it didn't include, for fifty-three years, was structured exercise. She wasn't looking for a sport or an identity when she found us. She was looking for a group workout that fit around a Boston commute, and for a room that would hold her accountable in a way she couldn't hold herself.

Marybeth, Sandy Brock, Betty and Shellie together during the 2026 Prototype Open at Prototype Training Systems

7:30, then 6:30, then 4

You can read Sandy's entire career in her class times. She started at 7:30 PM because that's what a Boston commute allows. Years later she helped open Nitsch's Worcester office and the commute ended, so 7:30 became 6:30. Eventually 6:30 became the 4 PM class, which is where she's been ever since.

Most people, over thirteen years, would have found one reason in there to stop. A schedule change is the most common way a gym membership quietly dies. Sandy just moved her class time and kept coming.

And somewhere along the way, the 4 PM class stopped being a slot on a calendar and became the reason she was there at all. She calls them the 4PM Besties, and she isn't joking. Her advice to them is four words long, which is somehow the whole philosophy: just show up and be yourself. That's always been enough.

"I originally came to get healthier and lose a little weight. What I found instead was a community and I kept coming."

— Sandy

What thirteen years actually looks like

Sandy's training record is one of the deepest in this building. 1,979 class sign-ins. 155 separate months with at least one visit, running from August of 2013 straight through to today. There's no gap to explain, no comeback chapter, no year off. Just a very long line of ordinary days.

Here's the part that surprises people. She hasn't slowed down. Over the last twelve months she's averaged 4.9 classes a week. In November of 2025, at year twelve, she logged 43 sign-ins in a single month — the busiest month of her entire time here. She isn't coasting on thirteen years of goodwill. She's training more now than she did at the start.

The lifts tell the same story. Her first result in our system is a 65-pound bench press on August 28, 2013. A week later, on September 4, she logged a 45-pound back squat. That's where she started: an empty barbell.

Her back squat today is 156 pounds. Her deadlift is 225. Her barbell hip thrust is 230. And every one of those numbers, along with her best hang clean, was set within the last twelve months — in the thirteenth year.

In her write-up, Sandy mentioned this almost in passing. She wrote that earlier this year she surprised herself with a new PR at Lift Off. She didn't name the lift. So I will. On April 26th she pulled 225 pounds off the floor, the heaviest deadlift of her life, and hit a 105-pound hang clean the same day. Two all-time bests in one session, at sixty-six years old, thirteen years after her first empty bar.

"I started at Prototype at age 53. Today, at 66, I'm stronger, more flexible, and in better shape than I was when I walked through the doors over a decade ago. Those moments remind me that progress doesn't have an expiration date."

— Sandy
Sandy Brock throwing a wall ball shot during a class at Prototype Training Systems in Westborough, MA

The year it became a lifeline

Then COVID arrived. Sandy struggled with the isolation and the uncertainty, the way a lot of people did and fewer people said out loud. She's direct about what this place became for her in that stretch. Not a workout. A lifeline. The familiar faces and the sense of connection were, in her words, critical to her mental well-being.

So, once again, she kept coming.

That's the thing about a decade of showing up. You're not building it for the good years. You're building it so it's already there on the day you need it.

24 workouts in 24 hours

Ask Sandy for a favorite memory and she goes straight to the 24 workouts in 24 hours. Betty planted the seed. Coach Tony led the crew. Sandy says that never in her wildest imagination did she think she'd be laughing through a 3 AM and a 4 AM workout.

There's a version of this gym she could have gotten anywhere. Show up, do the work, go home, get a little healthier. What she actually got was a 3 AM workout with people she loves and a nickname for her class.

Being the one who's been here a while

Sandy says one of the joys of being an old-timer is encouraging newer members to stay the course. She knows exactly what those first months feel like, because she was sore for months and questioned whether she could get out of bed, and she remembers it clearly enough to tell a nervous new member that it passes.

She talks about the breakthroughs. Your first overhead squat. Your first double-under. The first time you finally hit a milestone weight on a lift. Her point is that those victories never get old, and that what makes them special here is that they don't belong to just one person.

At Prototype, she says, it doesn't matter whose achievement it is. The entire community shares in the success.

Sandy Brock with the 4 PM and 5:30 PM evening crew at Prototype Training Systems in Westborough, MA

Why she's still coming

Sandy closes her story somewhere I didn't expect, and it's the part I haven't stopped thinking about.

As the youngest of nine, she's at the stage of life where she's watching her brothers and sisters approach their eighties and navigate a wide range of health challenges. She has a front-row seat to what the next twenty years can look like, in nine different versions. And it has reinforced something she says she already knew.

Staying active is not optional. It's essential.

That's a different reason than the one that got her in the door at fifty-three. She came to get healthier and lose a little weight. She stayed for the 4PM Besties. And now, at sixty-six, she trains because she's seen clearly what it protects.

Nobody comes here for what they actually find.

Why Sandy Trains
"Staying active is not optional. It's essential. And because of that, I can say with confidence that is why I will keep coming."

If you're in your fifties or sixties and some quiet part of you has decided you missed your window, this story is for you. Sandy was 53, out of shape, and knew nobody in the room. She lifted an empty barbell in her first week. The heaviest lifts of her life came thirteen years later. She wasn't special when she walked in — she was just willing to be sore for a few months and to keep coming.

You don't have to be ready. You just have to start.
Start with a free No Sweat Intro. It's a conversation, not a workout — you sit down with a coach, tell us where you actually are, and we tell you honestly whether we can help. Nobody's going to ask you to lift anything on day one. It's the same door Sandy walked through in August of 2013.
Book a Free No Sweat Intro
Sandy Brock wearing her Prototype Training Systems Hall of Fame jacket
A Note from Mike

Sandy joined us in August of 2013. We were barely a year old. I was still figuring out how to run a gym.

When her story came in, I read it twice. The first time I was just reading it. The second time I was counting. She wrote "I kept coming" seven times. She didn't do that on purpose. That's just how she thinks about it.

Here's the thing about that phrase. It sounds humble, almost like she's downplaying it. She isn't. It's the hardest thing in this entire business. I can write you a program, I can coach you through it, I can give you the best hour of your day. What I cannot do is get you back in the door 1,979 times.

I also want to point at something she buried. She wrote that she surprised herself with a PR at Lift Off this year and left it at that. She didn't say what it was. It was a 225-pound deadlift and a 105-pound hang clean, both all-time bests, both on the same day, at 66. That's not a nice story about an older member staying active. That's one of the best training days anybody had in this gym this year.

And in November of last year she signed in 43 times in one month. Year twelve. That was the busiest month she's ever had here. Read that again — the busiest month of her thirteen years came in year twelve.

The part that got me, though, is the end of her story. She's the youngest of nine and she's watching her brothers and sisters get into their eighties, and she's seeing up close what happens to people who stayed active and what happens to people who didn't. She says staying active isn't optional. It's essential.

Most people find that out too late to do much about it. Sandy found it out with thirteen years already in the bank.

If you're on the fence about starting and you think you're too old or too far behind — she was 53, she wasn't in shape, and she didn't know a soul in the building. She lifted an empty bar her first week. Thirteen years later she's stronger than she's ever been in her life.

She just kept coming.

Thank you, Sandy. And to the 4PM Besties — you know what you have.

— Mike

This story was developed through written responses submitted by the member and shaped with the help of AI writing tools. The facts, quotes, and experiences are Sandy's own — AI helped organize and present them in a format worthy of the story she's lived.

Prototype Training Systems
prototypetraining.com  ·  @prototypetraining  ·  Est. 2012
50 East Main St, Unit 1, Westborough, MA 01581

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