Get fit at the same time as doing good deeds. GoodGym runners are paired with isolated older people and they run to see them each week for a quick neighbourly visit. Visiting an older person as part of your weekly run can make a huge difference to their life. Over a million older people are always or often lonely, going for months without seeing friends or family. You could make a massive difference to their life by dropping in for 20 minutes as part of your run.
You can offer to be one of the people who would like to be paired with an older person. Help them out with deliveries - and be a companion.