Strengthen and tone your thighs with these at home quad workouts and exercises. Quad exercises, when done correctly, are one of the best ways to get the strong, powerful thighs you've always wanted.

If you’ve ever held a plank, paused at the bottom of a squat or pressed your palms together in front of your chest, you’ve done an isometric exercise. Ta-da! These holds might look simple — after all, ...