Be fit at any age . Fitness apps allow people to remotely work out with their social networks . Go , a running application , has more than 100 million users . Videogame - style games on fitness topics are motivating people to exercise . Fitness apps and websites function as workout guides and online games .
Fitness apps allow people to remotely work out with their social networks . Go , a running application , has more than 100 million users . Videogame - style games on fitness topics are motivating people to exercise . Fitness apps and websites function as workout guides and online games .