Supplement of the week: L Carnitine!, This one doesnt just boost fat metabolismit can also improve recovery, endurance, and even brain function. If youre serious about performance and longevity, Should I use L Carnitine on rest days or just before workouts? L Carnitine is not a magic fat burner It won't melt fat, build muscle, or replace hard work. The only thing it burns is your money Stick to the basics Active Recovery Guide How to Make the Most of Your Rest Days Ultimate Nutrition