Many people are looking for the best overall exercises and if I was to select the best single exercise if you could only pick one, it would be the Squat. Squats are an excellent lower body exercise that hit the largest muscles in your body that include glutes, hamstrings, quads, and calves. Working your largest muscle groups help you begin the body composition transformation that reduces fat % and builds toned muscles.
Find an Exercise ball, lean against it back and head straight looking forward. Feet should be shoulder width apart and with a smooth and steady sitting motion, bend at the hips and move your body downward till your legs are bent at a 90 degree angle. Pause for one second keeping the muscles in your lower body contracted and then move slowly back up into the standing upright position. Repeat this movement at least 12-15 times. Make sure you keep the fitness ball resting in your lower back area for support and stay very upright with your back and looking straight forward and not down at your feet.