Strength training builds lean muscle, which boosts metabolism and helps burn calories. During each exercise session, choose one move for each body part and do 15 repetitions. If you're just starting out, one set will be enough; as you improve, build to three sets. Weights should be heavy enough that you feel challenged during the last few repetitions (be sure to add weight as you get stronger). Once you get the routine down, you should be able to do one set of 15 repetitions for every part of the body in about 15 minutes. You don't need to buy a set of weights to complete these exercises -- simply grab a bottle of bleach or your child's book bag!

Ready to get started? Choose one move for each of these body parts:

• Glutes (buttocks)
  
• Quadriceps (front of thighs)
  
• Hamstrings (back of thighs)
  
• Calves
  
• Chest
  
• Back
  
• Shoulders
  
• Biceps (front of arms)
  
• Triceps (back of arms)
  
• Abs