Fingernails grow nearly 4 times faster than toenails.
31
Human teeth are almost as hard as rocks!
47
Redheads require up to 20% more anesthesia to be knocked out.
112
Chewing gum boosts your brain power.
285
Your heart pumps about 2,000 gallons of blood each day!
53
Your wounds heal faster if you lick them, you instinctively do this for that reason. Tears help, too.
20
You can reschedule your sleeping pattern by not eating 12-16 hours before you want to be awake. Upon eating after this time period, your internal clock will reset to a new day, with the time of your first meal being interpreted as "morning".
11