The coach behind Milton Academy's speed: how Chaim built Boston Athletic Training

Milton Academy football players are among the ISL athletes who make the trip to 90 Lincoln Street in Newton. There, Chaim runs Boston Athletic Training — a facility built around a single, narrow idea: make athletes faster, stronger, and sharper at the exact movements their sport demands.

This fall, that work has made him a quiet part of the Milton Academy football staff's support system, with players coming for speed work, strength training, and sport-specific performance coaching that complements what they do on campus.

Built from nothing

Chaim built Boston Athletic Training on his own. He grew up, by his own account, a poor Jewish kid — without the resources that many of the families he now trains came from. The business started with nothing behind it: no investors, no parent gym chain, no cushion. It grew one athlete at a time, in a space he put together himself.

The focus has stayed narrow on purpose. Rather than run a general fitness gym, BAT trains athletes for the demands of a sport — the first ten yards that decide a football play, the change of direction that opens a basketball lane, the acceleration that turns a runner into a recruit.

A record in the results

The athletes who have come through BAT are the case the business rests on. The facility lists Division I commitments among its alumni, including a Wake Forest commit, and has trained athletes who drew offers across FBS programs. For ISL families — Milton Academy's among them — those outcomes are what brings them through the door.

Working with ISL programs

Milton Academy competes in the Independent School League, a NEPSAC league of 16 New England independent schools. The school's football program has turned to outside specialists for speed and strength work, and Chaim has become one of them — a coach whose entire business is built around the kind of performance gains that decide Friday-night plays.

It is a familiar pattern in the ISL, where schools with strong academics and demanding schedules supplement in-house strength work with outside coaches who specialize. For Milton Academy football, that has meant speed and sport-specific performance training a few miles down the road in Newton.

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Editor's note: Boston Sports News is a section of Boston Athletic Training. This is a profile of the company's founder. Biographical details are drawn from the subject; information about the ISL and Milton Academy is sourced below.