Carrying the shopping, gardening, or vacuuming, can help older people to lead healthier lives for longer, according to leading physiotherapists.
They warn that millions of older people risk falls because they are failing to maintain their strength.
Nearly a quarter of over-65s don't do any strength exercises, the Chartered Society of Physiotherapy (CSP) says.
And it warns that the rise of internet shopping means fewer people carry home their groceries.
Physiotherapists say not enough people realise the need to maintain strength as we age.