wanna b surfer
New member
did anyone else notice an irregular heart beat while on it, and is this normal?
and also people say that it is bad for you because it raises your heart rate unnaturally, and i was wondering what difference it makes if your heart rate goes up naturally (cardio) or with the eca?
and also people say that it is bad for you because it raises your heart rate unnaturally, and i was wondering what difference it makes if your heart rate goes up naturally (cardio) or with the eca?