मानव शरीर के बारे में 

An average person breathes 20,000 times a day. The rate of breathing is faster in children & women compared to men. The deeper we breathe, the faster becomes the metabolism. Yawning helps us to inhale more oxygen into our lungs. We usually yawn as our brain sends a message to our sensory system when it senses the shortage of oxygen. The fingernails grow faster than toenails and the nail on the middle finger grows faster than the other fingernails. The middle fingernail grows faster than the other fingernails. एक औसत व्यक्ति एक दिन में बीस हजार बार सांस लेता है। पुरुषों की तुलना में बच्चों और महि