I too have noticed that i have a really strong heart beat, and can feel it whilst i am lying on my bed, my pulse in my neck is so strong sometimes that i have to get up....I think that my main problem is that i am stressed here at uni... It mainly happens when i am tired, streesed and can't sleep well. I am only 19, and found it quite weird that this was happening. my pulse rate is normal, about 75 a minute, and my blood pressure and blood results are spot on. It would be good to hear from others about this.