You are right sprinting is the best way to train stamina for boxing in terms of running. What you have to do is make sure that it resembles an actual boxing match by doing High Intensity Interval Training or HIIT for short. As in a boxing match there moments of high intensity bursts as well of moments of recovery or coasting. What you can do is doing high intensity sprints for 30 seconds and 30 seconds of jogging. Do this for three minutes as in a regular boxing round. Next do one minute of walking or standing in place to catch your breath as they do between rounds. Do this until you can work your way up to 12 rounds. You can play around with the different times between sprinting and jogging to see what works best for you. Also get a portable boxing timer to help you keep time.

i am using the training mask for stamina

There is no one way to train for stamina but I will tell you how I did it and how my kids do it. RUN 5-6 DAYS A WEEK 3-5. Now three days a week you are going to sprint 100 meters 10 x . Sprint down jog back ,sprint down jog back nothing to it. Here is the other thing you really don't have to do sprints aall remember the ring is only 22x22 at the most are 18x18 . So why would you need all that sprinting . You are going to do the sprinting with your hands heavy bag one minute all out on the bag and I mean all out 30 seconds break back on the bag one minute all out.

30 second extreme running

30 second rest

do it till you energy finish.

at the same time,

that's help to lose weight while keep you muscles.

but most important watch out your heart. be careful about that.

I'm training for boxing, and I heard a sprinting is the best way to increase my stamina.?So how many sprints should I do, and how much should I rest per sprint? And how many reps?Thanks