The human body is a marvel of engineering, capable of incredible feats and home to countless fascinating quirks and features. Did you know that the average person has around 100,000 hairs on their head, or that the human heart beats around 100,000 times a day? Other fun facts include the fact that the human nose can detect over 1 trillion different scents, while the tongue has around 10,000 taste buds. The strongest muscle in the body is actually the masseter, which is used for chewing, while the smallest.