Throbbing Legs After Moving Waking Me Up...

I agree with the suggestion it's dehydration. Eat bananas to replace potassium, eat foods with salt and drink sport drinks like Gatorade that will help balance and restore your electrolytes, elevate your legs while sleeping and resting to bring down swelling, take a warm to cool shower before bed, and drink water also to get yourself rehydrated. Tylenol or Advil will help with inflammation if that's what's happening with achey sore muscles. If you haven't been eating that well, have a good breakfast and lunch. Your metablolism might be on overdrive from all of the physical activity...you simply just may need a good meal.

drink a glass of tonic water. it has quinine in it and thats good for muscle cramps. my husband has that problem after working and going up and down ladders all day. the doctor recommended it and it works great

I bet youre a little dehydrated.
Drink water and take potassium or eat a banana or an orange before you hit the sack.

Have you tried gentle stretches?

In addition to the potassium, make sure you are taking calcium. Leg cramps are my surest sign I'm too low on it. I think the other responders are on track, though.