The heart beat can increase due to stress and exercise. There are many other factors that can increase heart rate.
moving around, emotion and what not
check you tube :P
Sometimes you can get scared,frustarated or upset and your heart rate will increase.
Cycling, swimming, running are three exercises that will increase the heart beat, open up the lungs, and increase the endurance and stamina.
Because the heart has to pump more oxygen than usual to your muscles
You can drastically increase your heart rate by smoking a bunch of crystal meth.
yes, it does
doing any excersice for 20 minutes or more, no less should increase your heart beat to the max. eg, jogging then sprinting.
Because everyones body reacts to fear with the "fight or flight" response with the brain producing adrenaline that speeds up your metabolism and your heart rate . I'm assuming your talking about a scary roller coaster ride or something to that effect.
How does an insects heart beat How does an insects heart beat How does an insects heart beat How does an insects heart beat
they release a significnat amount of the hormone thottieness before and after get tired