Calm BreathingIn 4 · Out 6 For beginners, relax the nerves
Box BreathingIn 4 · Hold 4 · Out 4 · Hold 4 Steady focus
4-7-8 SleepIn 4 · Hold 7 · Out 8 For sleep & anxiety
Coherent BreathingIn 5.5 · Out 5.5 Balance heart & mood
Dr. Zhang BreathingIn 8 · Out 12 Foundation, focus, sleep