Okay so i recently was trying to figure out how to remember my dreams because i haven't remembered one in months and came across lucid dreaming and tried a method ware i lay still in my bed and i try to let my body fall asleep but i keep myself awake. My body started to vibrate a lot and when i breathed it felt like sand was falling down my stomach each time and my body was a lot heaver. My heartbeat got VERY FAST while doing this and this caused me to freak out and stop myself from doing it. So is my heartbeat getting VERY FAST normal when trying to lucid dream for the first time? Also if it is normal was i close to a lucid dream at all?