Sometimes old school is the way to go. Jump ropes aren't just a playground staple -- boxers and other athletes have relied on the jump rope to improve fitness and agility for years. Men's Health shares five reasons you should include jumping rope in your fitness routine:

• Cost. You don't need to save up for a jump rope -- you can buy a decent one for $15 or less.
• Portability. Lightweight and convenient, a jump rope can go wherever you go -- on business trips, vacations, and so forth.
• Strength gain. Jumping rope is a weight-bearing activity so it's good for bone growth and muscle development.
  
• Improved coordination. If you're into sports, good footwork is important. Jumping rope will help you improve your timing and will increase your agility.
• Fat loss. Jumping rope is a great cardio activity and works a variety of muscle groups.
  

I have one more reason to add to the Men's Health list ... jumping rope is fun! And when you enjoy your workout, you're much more likely to stick with it.