To be healthy, work up a sweat Times of India - 18 Aug 2007
To be healthy, you really do need to break into a sweat when you exercise, say experts. Official advice that 30 minutes of gentle exercise a day is enough to improve your health has been revised by the scientists who first developed the international ...
Exercise Must Mean Exertion If You Want Good Health Medical News Today
Health experts advise 'vigorous' exercise Telegraph.co.uk