It’s important to increase your strength and stability for trail running. It’s a big difference to go from running on a treadmill to dodging tree roots and quick turns on a trail run. Do a one-legged jump to improve your balance. Stand on your right leg, drop into a half squat and jump diagonally to your left. Land in a half squat on your left leg, then repeat. Do 10 reps for two to three sets. Try a single leg balance on a Bosu ball to strengthen your ankle and foot muscles. Stand and bend one leg at …