Dynamic stretching (or stretching while moving), allows blood to flow while also reducing muscle tension. "Dynamic stretching is light movements that allow you to actively stretch, while also contracting your muscles." One example of dynamic stretching: this core twist. Alternate this twist on either side at a steady pace for a few minutes, Chambers says, to limber up while also increasing blood flow to your back and hamstrings — and ensuring that you walk tall after all of that hard work!