Exercise myths, checked
What people believe about exercise, why it sounds right, and what the studies found.
No A workout has to be at least 30 minutes to count
No. The 2018 US guideline dropped even the old 10-minute rule. Non-exercisers who got about 4 minutes a day of hard bursts had 26% to 30% lower risk of death.
Not the way you think You need 10,000 steps a day
Not the way you think. 10,000 came from Japanese walking clubs and a business slogan. Most of the drop in risk came by about 7,000, and by 6,000 to 8,000 after 60.
No Walking isn't real exercise
No. At about 100 steps a minute it's moderate exercise by the guideline's own test. Interval walking made 63-year-olds' legs 13% stronger in five months.
Not the way you think Exercise is the best way to lose weight
Not the way you think. The body makes up 28% of the burn, and a clear loss took over 4 hours a week. Its real job is keeping weight off and keeping muscle.
No Weekend-only workouts don't count
No. In 350,978 US adults, the same minutes squeezed into one or two days went with the same death rates as minutes spread across the week.
No Too much exercise wears out your heart
No. 10 times the minimum still went with 31% lower risk of death than none, and the fittest of 122,007 adults lived longest. Heart rhythm in athletes is the debate.
Yes, but Working out at night ruins your sleep
Yes, but only hard sessions that end within about 4 hours of bed, in 14,689 WHOOP wearers. Workouts ending 4 hours or more before bed showed no change in sleep.
Not the way you think Sitting is the new smoking
Not the way you think. Most of the harm is the moving you don't do. In a million adults, an hour of moving a day erased the extra risk of sitting over 8 hours.
