Scientists from the US national Institute on Aging reveal that exercise produces a protein called Cathepsin B which helps brain cell growth and improves memory.
Singing in a choir could help to keep cancer at bay, with a single hour of choral singing said to increase levels of immune proteins, reduce stress and improve mood.
The benefits of cycling and walking ‘outweighs the risk of air pollution’ in cities, says an international report. The study included Delhi, a city in India where cycling for five hours in a week was beneficial – despite pollution levels being 10 times higher than London.