To prime your body for whatever workout you're doing, try this 10-minute dynamic stretching routine created by Cohen. “These moves, especially the front kicks, will warm up your hamstrings and increase hip flexion, IT band elasticity, and core stability,” she says.
Jog to Butt-Kicks
Begin by jogging in place for two to three minutes at a steady pace. Alternate the jog every 20 seconds with hamstring curls (a.k.a. butt-kicks). Make sure the heels of your feet touch your glutes (you don't have to grab your ankles).
Walk on your toes for 60 seconds to increase ankle motion and strengthen the calves (no need to hold weights).
Squat with Arm Swing
Squat down slightly and while rising swing your arms forward. Repeat for 60 seconds.
Extend arms out to the sides like a “T”. Perform 20 small circles in each direction, then 20 big circles in each direction. This should take about 1-2 minutes.
Straight Leg Front Kicks
Stand tall. Keeping your knees straight, alternate kicking each leg up, leading with the ball of your foot. As your hamstrings warm up, begin increasing your range of motion by kicking higher and stronger. Make sure to extend the leg as fully as you can without locking during each kick. Perform 25 kicks on each leg (50 total).
Give yourself about 10 feet of space. Shuffle to the right for 3 counts, then touch the floor, and shuffle to the left. Repeat the right/left shuffle 16 times. This can also be done on a treadmill, switching shuffle direction every 10 seconds.
Exercisers that stretch on off days experience greater strength gains than those who don’t. Add Stretching Exercises That Build Strength to your fitness plan for faster results.