Jim Berg is a Les Mills trainer from Sweden. He has been a group fitness instructor since 1997, runs his own education company, manages a private gym, studies sports science at Gothenbourg University and is currently competing with and managing an elite road bike team.
Why monitor your heart rate in group fitness classes | Q&A with Les Mills Trainer Jim Berg
Your heart’s reaction to exercise is always personal, whether you’re doing an individual or a group workout. That’s why you should monitor your heart rate and adjust your workout accordingly, even in group fitness classes.