There’s really no way around this. We all need to be pushing ourselves, especially as we get older, yet only 10 percent of people over the age of 65 do.32 The good news is that we don’t have to exercise for hours on end. One recent study found that those who ran four to five miles a week—for most people, that’s an amount of exercise that can be done in less than 15 minutes per day—reduce their chance of death from a heart attack by 40 percent and all-cause mortality by 45 percent.33 That’s a massive effect.
