The singer maintains an intense workout workout and healthy eating habits to stay fit. The key to J.Lo's booty? Sumo lunges, according to trainer David Kirsch. While other celebrities were posting BTS ...

Lunges are worth the effort you put into them. They work many muscle groups at once, including hips, glutes, quads, hamstrings and core. In addition to strengthening muscles, lunges help with balance, ...

Lunges and squats are both popular strength exercises for your lower body. There are a ton of variations of these moves — some that may even look and feel almost identical. When it comes to lunges and ...