Take on the squat, plank, and lunge 30 day challenge squat, plank, lunge 30 day challenge! Representative body workout 💪 Try the squat, plank, lunge 30 day challenge. This app helps you to challenge squats, lunges, planks every day with an appropriate plan for 30 days. It is a program that starts with a simple number of squats at first and gradually increases the intensity. If you diligently workout squats, lunges, and planks for 30 days, you will find your abs and your stamina improved, and