I must take care about the food I take;
I must avoid the smoke whenev’r I bake;
I must avoid dust rising when I rake!
I must be cautious of the wealth I make;

I better count the calories in cake;
I better note the genuine from the fake;
A river-water tastes better than lake;
Make sacrifices I must, for God’s sake
And pray to keep my soul with grace, awake!

Dr John Celes

http://www.poemhunter.com/poem/a-poem-of-rhymes/