Upright leg splits
Bas says that when doing the splits, people often make the mistake of leaning over to balance on their forearms. The fact is, we don't kick like that. We kick in an upright posture. "I stand in the splits, but straight up. My feet slide wider and wider, and while I do that I pull back on my hands to stretch my forearms," he says. "I also place my elbow behind my head and stretch my shoulders."