You’ve seen the pictures. Online, on TV, or in a magazine, someone promotes their ‘best exercise for weight loss’ with those before and after pictures. In the one on the left, they look like they need to lose weight.

You’ve seen the pictures. Online, on TV, or in a magazine, someone promotes their ‘best exercise for weight loss’ with those before and after pictures. In the one on the left, they look like they need to lose weight.