Are you over 16? You're older than the average caveman!
The average lifespan of a caveman was 16 years. Throughout time, as living conditions improved, life expectancy increased. In 500BC the expectancy was 20 years and in 400AD it was 35 years. Lifestyle and hardships played a major factor in the short years expected of people from early times. Advances in medical technology have greatly increased the lifespan of humans to date.