Sure, if you have an injury or you're particularly sore after lower-body day in your HIIT class, it might make sense to take anti-inflammatories, like ibuprofen, to mitigate the pain. If you're popping pills like they're candy every night to deal with chronic soreness or to avoid feeling tired during your workout, though, it's a problem.
"If you find yourself relying on pre- or post-workout supplements or anti-inflammatory medicines, it's a great opportunity to take a step back and reevaluate your diet, lifestyle, and workout routine," Costich said.
Is there a gap in your diet leaving you nutrient deficient in certain areas? Are the workouts you're doing too hard on your muscles or joints? Are you skimping on sleep? "The goal is for working out to have a positive impact on your well-being, physically and mentally, so if what you're doing isn't working for you, it's never too late to switch it up," Costich said.