WARM UP and COOL DOWN:
Most workout-related injuries can be avoided by proper
warm-up and cool-down. Your muscles need a 5 to 15 minute warm-up as well as a brief cool-down. This is true for all weight training workouts!
START AT THE APPROPRIATE LEVEL:
If you begin weight training at high levels you risk serious injury. You will also develop poor form, which will hinder your efforts and discourage you.If you cannot lift the weight your working with 12 times with proper form, the weight is ...