People who work with friends on social networking tools tend to be more active . Tightly connected , supportive communities have popped up for apps like RunKeeper and tools like Facebook . These help encourage people to work out and keep them motivated .
People who connect with friends on fitness tracking tools tend to be more active . Tightly knit , supportive communities have popped up for apps like RunKeeper and tools like FitBit . Connections help remind people to work out and keep them motivated .