In conjunction with wearable devices, modern smartphones can deliver a wealth of information on your physical activity and health.
Keeping track of your health and lifestyle has never been easier or more accurate thanks to wearable devices and powerful smartphone apps. Most wearables come with free apps that include health "challenges" to motivate you to increase your level of performance. In addition, there are many ways to evaluate your past activity and even your overall health. You can record not only how many steps you took in a day, but also the quality of your sleep or average heart rate.