There are only two ways to heal yourself back to 100 per cent - the very rare Medkit, which instantly heals you to 100 per cent after 10 seconds, and 'boost' items like Energy Drinks and Painkillers, which will heal you over time.
PUBG update 29 is live: here's our guide to the latest to get you up to speed.
On PUBG Mobile, you could set ADS to be tapped or held.