1. Going straight into your workout
You want to fit in your whole workout, but skipping your workout to do so is a huge mistake.
New York-based personal trainer Miriam Fried told us that about 90% of gym-goers she sees don't warm up. The other 10% are often doing random moves before going into their full-on workout.
"Plan on warming up whatever you're working on that day, and going through the range of motion that you're going to be going through," she said, noting that a good warm-up could last anywhere from five to 10 minutes.
"I get it: A lot of people are crunched on time, and they just want to get right into their workout," she said. "But it's 100% not worth the risk of the injury that can come with it, so it's worth giving yourself five minutes."
[Photo via Getty]