The next time you're thinking you can't, be inspired by Phil Rabinowitz, alias "Flying Phil". He is a 100-year-old resident of Cape Town, South Africa, who just entered the Guinness Book of Records. In July, he set a new world's record for running 100 meters in 30.86 seconds. In fact, he clocked an even faster time of 28.7 seconds the week before but a malfunction in the electronic timing equipment meant it could not be officially recognized.

He walks four miles each day, five days a week, to his daughter's dog food factory, where he does the accounting. When training for a race, Flying Phil walks 10.00 kilometers, or 6.21 miles, every day. He competes in mini marathons, ran a leg of the Olympic torch relay and is now in training for the 200 meter race.

If Flying Phil can compete at 100 years of age, the rest of us have no excuses at all!