How to improve your stamina in sparring/fight?

[Rockin']

[how long since your training days...……….......Rockin'

[CodeBreaker]

[how long since your training days...……….......Rockin'

I started boxing 2 months ago

[Rockin']

I started boxing 2 months ago

So then these are your training days...…...Rockin'

[Commie]

Then double or triple the amount of exercise
Including sparring

Boxing has no shortcuts
If you’re trying to be a smart ass you’re gonna pay. Period

[Commie]

I started boxing 2 months ago

Takes about 2 years to get in a decent fighting shape

[Eastbound]

Would think a young person could get in good enough shape in 8 weeks to go 3 decent rounds. Your are most likely making progress but its hard to measure day to day. Push your self more during workouts. Do some high intensity stuff getting the heart rate up for as long as possible. Continuous left right on the heavy for 30-60 second intervals. Wind sprints. Longer distance roadwork at least 2 Or 3 times a week, maybe like 3-5miles. Jump rope...can you go at least 20mins non stop? Be mindful of your breathing. Keep sparring and you’ll get better at regulating yourself and lasting longer. You’ll get there don’t give up. Max respect to all those moving their body daily!

[Lomadeaux]

But all of a sudden, on my sparring day, after 1 and a half rounds of sparring, I am already out of gas.

The bag doesn't hit back.