Google Glass is designed for normal people. However, if you are an athlete, you need something more than this. Instabeat is the right choice for swimmers where a sensor is attached to the goggles of the swimmers in which the information about the performance is displayed like the heart rate of swimmer. With the help of Instabeat, the swimmer can easily keep a check on his heart rate without the need of looking anywhere else. The best part is that it is an attachment and can be combined with any of your favourite goggles. Instabeat from Indiegogo is the best heart rate monitor.