I just figured out that you can put a lot more challenge into your pushups by putting your heels against a wall for extra resistance.
Nathan Alter lives in Albuquerque with his wife and kids. He currently develops in C#/.NET, but is learning all the time and has enjoyed computers since programming in Basic on an Atari 400 as a teenager. He started blogging in 1999.
I just figured out that you can put a lot more challenge into your pushups by putting your heels against a wall for extra resistance.