Is it normal to feel like your lungs are compressing and your heart is beating slower while on a roaster coaster? this happend to me today

so from my knowledge this could be you adrenaline sky rocketing, causing your body to create a system where it cools your body down. its like yawning, your brain sends a signal. but instead of just a signal your body actually generates a cooling system. does that make sense? either that or your adrenaline was so high that you were at loss of breath. overwhelming sensation.

yes it normal because the roller coaster has alot of speed

a progressive heart disease that affects pumping action of the heart muscles.