Waking in general, if one does nothing else to get the body moving, is ridiculously beneficial to the body. My wife's great grandfather lived to 99 (only died due to a fall which created a minute interior bleed in his brain), but up until he was 95, he was doing 10km every morning on the treadmill, and from 95 till his death was doing 3km. Never seen anything like it!
I know it's anecdotal, but it changed my perspective on getting old. Just move the body, basically.
Doubt it