1. Muscles are built during sleep – It’s during sleep that muscles actually grow. When you’re sleeping, all those hardworking muscles of yours can finally relax, allowing more blood circulation. Also, hormones are released during sleep that contribute to the repair and restoration of the tissues.
  2. Muscles provide body heat – Your muscles create at least 85 percent of your total body heat. When muscles contract, they putt of some serious warmth.
  3. Muscle gains happen quicker than loss – You might lose some muscles when you don’t workout for a month, you can gain a lot of muscles in the same amount of time. If you don’t work out for 2 months, you lose about 23 percent of muscle strength, whereas if you work out for 2 months, this leads to 47 percent of muscle strength.
  4. Muscle tissue makes up between 35 to 40 percent of your body weight.
  5. The strongest muscle in your body is the gluteus maximus.