Really planks: Reverse planks every day: This is how your body changes visible
Pushups, crunches and the classic plank are already part of your standard repertoire? Then it is time for the next stage: the reverse plank conquers...
Tag : richtig
Training correctly: How to optimize your fitness with the right heart rate
Why is your heart rate so important for effective training? Your heart rate is a reliable indicator of the stress of your cardiovascular system. It...