No one likes to hear that they need to do more of an exercise they hate, but according to Maietta, that's something you really should be doing. "I recommend spending more time on the things you've been avoiding," he says. "If you're cardio centric, shift gears to resistance training. If you're weights focussed, add in some cardio to round out your skill set. In each age range, I would [focus on] your weaker areas."