Key points from article :
Maintaining or starting exercise at middle or older age may lead to a longer life.
Still beneficial even if they were inactive during their younger years.
Reduced all-cause mortality by 24%, CVS deaths by 29% and cancer deaths by 11%.
Recommends at least 150 minutes of moderate exercise per week.
Assessed activity levels of 14,599 people between 40-80 ages over 8 years.
Research by University of Cambridge, published in the British Medical Journal.
