10 Biggest Fitness Mistakes That Are Making You Fat Mistake #5:

Mistake #5: You have your routine down.

Unfortunately, what works, works only for a short period. Just like your mind has to work extra hard to learn something new, your body kicks into overdrive when you start a new exercise program it's not familiar with. If you do the same routine for too long, your body will adapt -- and soon what used to "work" no longer will (at least not as well). The key to seeing results is to constantly challenge your body and practice variety in your workouts so you don't plateau. Typically a routine "works" for up to two weeks before it needs to be tweaked. So change it up -- the tweaks don't have to be big. For example, change a barbell squat to a dumbbell squat, or swap dumbbells for kettlebells or sandbags. Or instead of your standard 30 minutes on the elliptical, do the elliptical in reverse for 10 minutes, then hop on the rowing machine for 10 minutes and finish with 10 minutes on the treadmill. Then reverse the order in your next workout.