It's hard to argue that modern life has made us more sedentary. That's not a good thing. It's also a hassle to remember to track every activity you do throughout the day. Human makes it easy. Using the sensors in your iPhone, it automatically picks up on all the mundane movements you make — like walks, climbing stairs, and bicycle rides — and encourages you to get at least 30 minutes of activity every day. You can also create a group for your friends to join up and compare activity logs, making daily bragging rights added motivation to get up out of your seat and move.