| http://www.w3.org/ns/prov#value | - If that is too much, take a 'little and often' approach, advising a gradual increase starting with just three minutes.The ideal is a combination of endurance exercises, strength exercises and stretching/balance/co-ordination exercises.It is never too late to start, and any activity is better than none.Adequate warm-up is important, and safe e
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