Physical activity may have less to do with weight loss than we think.

Countless gym memberships, fitness tracking devices, sports drinks, and workout videos have been sold on this promise.

There's just one problem: This message is not only wrong, it's leading us astray in our fight against obesity.

To find out why, I read through more than 60 studies on exercise and weight loss. I also spoke to nine leading exercise, nutrition, and obesity researchers. Here's what I learned...

Physical activity may have less to do with weight loss than we think.

Countless gym memberships, fitness tracking devices, sports drinks, and workout videos have been sold on this promise.

There's just one problem: This message is not only wrong, it's leading us astray in our fight against obesity.

To find out why, I read through more than 60 studies on exercise and weight loss. I also spoke to nine leading exercise, nutrition, and obesity researchers. Here's what I learned...