Exercise at least three times a week (Tip 31)

[pioneer]

People often complain of being too tired to work out. But physical activity actually improves your capacity for work, so people who exercise on a regular basis actually have more energy, strength and endurance for daily activities than do their sedentary friends. That feeling of increased energy, and vitality is one of the benefits people tend to notice a few weeks after starting working out on a regular basis.

source: ririanproject.com