Eat ~100mg of caffeine really quickly (like a caffeine pill or slamming some coffee maybe) and immediately set a 20 min to 45 min timer and get into bed. Fall asleep and depending on your condition you will feel mildly to very refreshed after you wake up. You'll probably be up even before your timer goes off if it's on the longer side.
nah caffeine wont give really anyone a heart attack. but if someone took a dumbfuck dosage of it and had one, then its really that (the dosage) that causes the heart attack, not caffein