Once you know the BPM you should be running to, you can find the right music and create the ultimate playlist to help you maintain a steady rhythm for your runs. You could also switch up the BPM playlists if you want a more intense run (166 BPM, for example) or an easier jog (150 BPM).
In physiology and medicine, the body surface area (BSA) is the measured or calculated surface area of a human body. For many clinical purposes BSA is a better indicator of metabolic mass than body weight because it is less affected by abnormal adipose mass.
Skin: epidermal layers. The skin is the largest organ of the body, with a surface area of 18 square feet. Its two main layers are the epidermis (outer layer) and dermis (inner layer). The epidermis has several strata (layers) that contain four cell types.