John Rymes stands at the counter at BagelWorks in Concord, pondering what to eat for lunch.
It’s not a simple decision.
“I kinda have to look to see what I’ve burnt today. If I look at my diary, it’s only like 300 calories so I have to probably be a bit careful,” he says. “I have 1200 calories remaining for the day."
Rymes shows off his iPhone, on which he’s pulled up his favorite program -- a weight loss app called MyFitnessPal.
Being fit, though, is not his issue. He’s a triathlete – one of the best in the world at the half Ironman.