Exercise!

1. If walking is good for your health, the postman would be immortal. 2. A whale swims all day, only eats fish, only drinks water and is fat. 3. A rabbit only eats vegetables, runs and hops all day long and only lives 5 years. 4. a tortoise doesn't run and does nothing energetic, yet is lives for 150 years. And you tell me to exercise??!