Activ8 Fitness Tracker According to the human physiology, they were designed to have a healthy life span of around 90 years and it has been decreasing very rapidly over the globe. People need to keep a track of their health at all times to stay fit. But these days, people do not even have time to go to doctors for their regular check-ups and hence have proper health track of the body. Keeping the body fit is one of the jobs which can be done only if the person is aware of all that is going on in the body. But here too tech has come to saving humans and many health bands and gadgets have been introduced in the market for keeping a track of the health of its user.