Twitter Bookmarks - Create shortcuts to your favorite users/tweets on Twitter
MyFitnessPal - Track the number of calories that you consume each day with MyFitnessPal. The app also lets you create a diet and track the exercise that you complete each day whether it's walking, running or some other type of program.
Tweetflick - Save, organize & find Tweets to get the most out of Twitter
Fitbod - Personalized Strength-Training powered by Machine Learning
TweepsBook - A better bookmarking tool for power Twitter users that you can use to filter, organize and bookmark tweets on your liking.
Fitocracy - Fitocracy is a social network that turns exercise into a cooperative and competitive exercise with friends, rivals, and strangers.