Fitbit has everything I need, the steps, the Heart Rate, it has all of my exercising modes, and it has a fair price. It has a rather simplistic User interface, which I really like to be honest. Highly recommened!
i3 - A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
Lose it! - Snap a photo of your food to get nutritional facts
dwm - dwm is a dynamic window manager for X. It manages windows in tiled, monocle and floating layouts. All of the layouts can be applied dynamically, optimising the environment for the application in use and the task performed.
Strava - The #1 app for runners and cyclists
awesome - A dynamic window manager for the X Window System developed in the C and Lua programming languages.
SmartHealth - SmartHealth is a health and fitness app that effectively monitors and records your sleep patterns and various health-related parameters such as heart rate, blood pressure, etc.