I've been meditating for about a week now, usually for 30 minutes at a time. I use a metronome and try t synchronize my heart beats with the metronome beats. Then, i decrease the metronome and do it again and so on until i feel like all that exists in the world is the beat. However, a couple of times, i've gotten lightheaded and tingly and thrown up. I know i'm not sick because i feel fine when i'm not meditating. Is it possible i'm getting by heart to beat too slow? or am i just doing it too fast? has this ever happened to anyone else?
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