And a new study has suggested as little as four minutes of daily strengthening exercise can dramatically improve quality of life for older adults. AdvertisementFor the new study, they tested the effects of a program, called FAST-2, to see if it improved mobility and physical capability in over-65s. AdvertisementAs participants improved, they were encouraged to progress to higher levels of difficulty. Lead author Christopher Sciamanna, professor of medicine and of public health at Penn State College of Medicine, said: “The human body is designed to improve very quickly. And just a few repetitions of an exercise performed regularly can lead to huge improvements.”