White and black Americans were about equally likely to lift weights, while Mexican Americans were least likely. People at higher socioeconomic levels were also more likely to say they lifted weights.

Choosing a weight to workout with isn't always black or white. Getty Images When it comes to working out , there's a lot of information out there about if you should lift heavy weights or not ...

If you want to lift the most weight possible, hypertrophy should be the aim and HIIT is a great way to do it. You’ll spend less time at the gym and see at least the same gains.

Barefoot weight lifting “gives me a better sense of the ground,” she said. Rachel Fairbank is a freelance science writer based in Texas. A version of this article appears in print on ...