Q:   “I want to get stronger, but I avoid weightlifting because I’ve always heard it makes you slow and reduces flexibility. Is this true?” A:  Old-school weightlifting is one of the best ways to build strength. Weight workouts are also a tried-and-true method for improving your personal power output. There are, however, a few secrets to success you may not know. Once you master them, you’ll drastically improve your strength without sacrificing other attributes you need for m