Boost your run

Plank – Workouts for women – We Heart Living

Super plank – 3 sets, 20 seconds each

A strong core will keep you upright and stable while you run. Keep your planks short and sweet – make sure your body’s in a straight line, brace your glutes and your abs as hard as possible, and hold it. If you can do this for more than the given time, you aren’t trying hard enough.