The plank challenge: 7 minutes in 5 weeks.
The plank challenge: 7 minutes in 5 weeks. This app contains a 5 week program that will allow you to make the plank for 7 minutes.
Follow the program and get a quick result, more strength, better endurance, strong arms, shoulders, back and a flat stomach.
After completing the plank exercises you will have the opportunity to evaluate your performance and give it a rating.