One of the most direct ways of testing core strength, flexibility, balance and body control is simply landing up from the prone position…without using your hands.
Start with the Pilates Roll-Like-a-Ball exercise by lying on a mat on the ground and curling into a ball. Hold your shins (beginners grab the backs of your thighs), then roll forward and, using momentum, stand up.
Watch how, after four months of training 50-something, Steve, rolls up onto his feet. Way to go Steve!