How can i slow my heart rate down by just meditation?

Conditioning and ..: If you are in general good health, aerobic conditioning is good way to train your heart to pump well and slow down when you are resting. When you are physically/cardiovascular fit, your heart during exercise is even slower than average. Meditation helps too. Also, minimize use of stimulants such as caffeine, cold medicines, energy drinks etc.. If persistent, consult doc for eval... Good luck.

Yes: Meditation does the slow the heart rate. It's not a matter of how. If you can successfully lose yourself in meditation, your heart rate (assuming normal rhythm, not a pathological rhythm like atrial fibrillation or svt) will slow. Self-hypnosis, transcendental meditation, yoga, prayer - all will slow the heart as does sleep (every night!). But it only works while you're doing it.