If I had a dime bag for every time i've read the comment "BRuH u dont evEN HoLd ur hitZ" in my years of smoking weed on the internet? I'd be chain smoking joints the size of baseball bats.
WELL TODAY CLASS, We get to learn about tiny little sacs of air in our lungs that help us get high! They're called Alveoli.
So the big question: Do you have to hold your hits to get higher?
Not unless you're a fan of essentially suffocating yourself for no reason. The "high" you feel is called oxygen depravation and is NOT a healthy idea.