Pretty sure it could be head circles because your neck is really delicate and if something happens, you could get seriously hurt or disabled from moving. (Sorry if I’m wrong, I’m no doctor)
- If it's a pill or something, someones body could react badly to it
- Age definitely effects it
Adult is 30 chest compression to 2 breaths. For child its 15 chest compression to 2 breaths. For infants its the same as a child but don't use your hand its only two fingers or thumbs
How do you not know this it’s so easy
I hope this helps! i just wrote it out