I have an on-again, off-again relationship with exercise. There was a time in my 20s when I worked out consistently. I took a mix of fitness classes, such as boxing, cardio dance, HIIT and even ...

Muscle soreness can be a totally normal part of exercising, but if it lasts for more than a few days or makes it hard just to walk around during the day, it's an indicator that you're doing too much ...