Instruct: Classify the given Amazon review as either positive or negative.
Query: This Was Highly Recommended....and I Don't Know Why

Sick and tired of getting only 2 to 3 hours of sleep per night and having to face 10 - 12 hour work days, several people recommended melatonin for sleep. They swear by it (though they've never actually used it). I broke down and bought a bottle and here I am at 6 a.m., STILL awake and have to be up and getting ready for work at 11 a.m. It did make me sleepy in a short period of time, and I did fall asleep much earlier than usual, which is what I wanted, but I didn't stay asleep (which is the same problem with OTC sleep aids). I slept for 45 mnutes and have now been awake ever since. I awoke with aching, cramping feet and ankles, and my feet feel like they weigh twice as much as they usually do. This hasn't happened since I was pregnant 21 years ago. They ache so bad, I have to keep rubbing them and going back to sleep looks impossible. I would not recommend melatonin for help in sleeping. I feel more miserable than when I take nothing.