A few years ago I was working with a guy at 10:30 pm who was about 6’7″ bench pressing 412 lbs. We were alone in the gym and as I was spotting him I was thinking “If you drop this weight I can’t save you.” At the time my max deadlift was 405 lbs. What I was doing with this client was inherently unsafe.
I saw over and over again in my one-on-ones that we were either talking too much, or that I was alone in a room without cameras with someone and no way to cover any liability. So I landed on the conclusion that one-on-one personal training is unsafe for the client and the trainer by default. And a huge percentage of the time spent one-on-one was often just chit-chat.
So I went all in on large group programs. Everyone does the same thing.
And I thought that would solve the problem. For a while, it did. But what I found is that when you put 15 people in a room with one coach, the people who need the most attention get the least of it. The coach is managing the room, not the individuals in it. I’ve been that coach. And I watched people plateau because no one could give them the specific cue they needed in the moment they needed it.
So I landed somewhere in the middle: small group coaching. And through years of trial, error, and honest conversations with our team, we settled on a maximum of four adventurers to one Shapesmith.
That’s the floor ratio. Four to one.
At four to one, your coach actually sees you. Not a generalized version of you, but you — your form on that specific set, your energy today, the hip tweak that showed up on Tuesday. They can walk over. They can give you a cue mid-rep. They can adjust your load if something looks off.
At five to one, that starts to break down. We’ve tested it. The quality of attention drops in ways that are hard to measure but easy to feel. Someone spends too long alone in a corner. Someone else’s form deteriorates and no one catches it until after the session ends.
So we hold the line at four. Not because it’s the most profitable ratio — it isn’t — but because it’s the ratio at which we can actually deliver what we promise.
When you sign up at Bjorn, you’re not buying access to a floor. You’re buying coaching. And coaching, by definition, requires attention. Four to one is how we protect that.