This is a full body beginner classical reformer Pilates workout. I am using a Gratz reformer, which has 4 of the same heavy springs. If you have a different reformer, here is a suggested spring conversion chart:
Peak Pilates:
4 springs = 2 yellow, 2 blue
3 springs = 2 yellow, 1 blue
2 springs = 2 yellow
1 spring = 1 yellow (or 1 red)

Balanced Body:
4 springs = 3 red, 1 green
3 springs = 2 red, 1 green
2 springs = 1 red, 1 green
1 spring = 1 red (or 1 green)