Instruct: Classify Amazon reviews into positive or negative sentiment
Query: feeling sick from using this belt

This belt makes me feel so sick after using it. I feel light headed and nauseous, very weak and body aches. I am a very healthy and active person who workouts daily. When I stopped using this I did not feel this way. I used it on high intensity for 40min. 5 days a week. on the other 2 days I am fine then when I start again...BAM, I feel sick again. I am very skeptical about this belt. If you want reviews google slendertone and there are some great reviews where the people have performed test and have the results.