Take a seat in a chair so that your knees bend at a 90-degree angle. Make sure that when you are sitting down, your back is straight and your hips are forward in the chair. Wrap a resistance band around the ball of your foot and lift your leg in the air. You want to get your leg at least parallel to the floor, but if you can lift it higher then you should. Keep the other foot firmly planted on the ground. Then, point your toes as far as you can and hold this position for 2-5 seconds. Pointing your toes will flex the ankle and stretch the tibialis anterior. After a few seconds, release the position but don't put your foot back down on the ground. Repeat this motion 10-15 times. After doing enough reps to tire out your anterior tibialis on one leg, switch and do this whole exercise on the other leg.