Fitness and age experiment | Dr Alice Roberts: Don’t Die Young
Dr Alice Roberts explores the benefits of exercise on the human body and takes part in an exercise challenge to examine the effects of old age on our fitness levels.
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A "comfort eater" is shown an MRI of her brain during an experiment, proving her reward centre is significantly heightened when offered an unhealthy treat.
Soup and feeling full | What's The Right Diet For You? A Horizon Special
A test is done where the dieters eat cooked vegetables and then, on another day, soup to see which one makes them feel fuller.