Sleep is an absolute game changer. If you have ever been through a time in your life when you feel like you are exercising regularly, eating good, and just can't seem to make any progress, chances are you are not recovering properly. Sleep is the body's reset button...
Raise your hand if you get enough sleep? Not too many hands there, I know mine wasn't up. But I am constantly working on ways I can improve my sleep/rest, which will lead to better recovery, which will lead me to getting better results with those first two building...
