In addition it implies prioritising rest. He would've been horrified at Margaret Thatcher’s (and for that matter Donald Trump’s) assert of only needing four several hours shut-eye a night: 6 to 8 several hours of good quality rest is ideal. Right now I practice smarter, not harder. 20 yrs ago, https://womenshealthmagonline.com/uk/fitness/strength-training/a704579/the-20-minute-workouts-that-really-get-results/