My favorite workout is using Leslie Sansone DVDs her walking programs. I'm addicted to them.
An easy way to drink 8 glasses of water a day is to get a tall glass which holds 500 ml or 16 floz. Drink one when you wake up in the morning, another before lunch, again before dinner. Thats 6 down, just two more to go throughout the day and whilee exercising and your done.