If you're jumping from boxing class in the morning to a run in the evening, and then again at boxing come morning, you might not be giving your muscles enough time to fully repair and rebuild damaged tissue. "One of the worst things we see clients do is overtrain by going straight from one workout to another," Costich said.
"When we're only after those quick results, we tend to do too much in too short of a time frame, often leading to injury or imbalance. Rather than burn yourself out, we believe in a more sustainable lifestyle of long-term commitment and consistency to help you feel your best and see even better results," Costich said.
It is fine to work out twice a day, though, as long as you're doing it the right way.
