C.B.
Cramps are narrowed down to mainly two things, dehydration and potassium. Water consumption should be fairly simple but fails on a lot of people's requirements. A 5'6" person should be drinking about 4liters of water a day (your pee should be a really light yellow to almost clear). For Potassium, Bananas and nuts have a good amount of potassium. You should never cold stretch (stretching prior to any workout), always do some exercise before hand. Get on the tread mill and at a 3-4mph hour pace for about 10 minutes then stretch your muscles, all not just the ones you will be using. Legs, behind, abs, back, arms, shoulders and neck.
As for Vicky, your muscles are not used to that routine and will complain, as they get used to it, they will complain less. When your muscles stop complaining then you have an issue, that is when they are no longer being worked which means they will no longer grow. I recommend using a site like shapefit.com or a similar website desigend for workouts.