For boxing what age do you think physical prime typically ends?

Impossible to say... when do we all reach prime? Everyone is different.

Some greats continue doing great well into 30 and 40, others fall apart before then. And some never really peak because they never put enough work in to reach potential.

And then there is the mental factor - as you get older you have better thinking, better strategy, less hesitant, less fear factor, more self belief.

All those elements impact your physical performance, mind over matter. You reach a point in your life out of your twenties where you are MENTALLY IN TUNE with your body and able to do more with it.
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We know who peaks early and declines early, the ones that rely on athletic/explosiveness/speed. Those attributes don't last long at all.

Haye
Tyson
Roy Jones
Muhammed Ali

 

The ones that rely on boxing fundamentals like Hopkins, Ortiz, McCallum, Wladimir Klitschko and Floyd Mayweather jr. tend to last longer than the ones that rely on athletic abilities like Haye and Roy Jones jr. but it's not always the case, there are exceptions.

 

Seems to depend on the fighter.

Sergio Martinez still had his speed and stamina at 37. He looked the same at 35. And even when you look back at his rematch with Richard Williams back in 2003, during which Martinez was in his supposed physical prime at 28, he looked the same as he did in 2012.

Miguel Cotto was supposedly shot at 29(according to crazed fanboys), but at 34 he still had speed, reflexes and most impressively, he had his legs under him.

Erislandy Lara seems to be an old fighter at 35, as logic would suggest. His speed is not as prevalent and most important off all, his legs are gone!
But what is odd is that he has been a relatively stationary target since his fight with Alvarez. Lara going toe to toe with Hurd was not some anomaly.

Both Mayweather and Pacquiao, while clearly past their best, were still elite level athletes past 35.

Adonis Stevenson finally showed his age at 40. At 36 he was a freaking monster.

 

But then you have someone like Hernan Marquez who was completely done at 27.

 

I think after 31 loss of speed, explosiveness and stamina is inevitable.

Let's be real here. How many times have you seen a 33 year old or 34 year old thrown bomb after bomb after bomb?

 

matters what weight. Flyweight? 28... heavyweight? 35 or a little older

 

In addition to weightclass, I think this also depends on time. The current class of boxers should have the most “old” fighters who are actually in their prime (i.e. Eleider Alvarez, Wilder, Usyk, etc.)

 

It varies from fighter to fighter. Some fighters have shorter primes due to laziness, injury, and even their fighting style is a major factor.

Frazier and Tyson due to laziness and inactivity were washed up by 28-29. That said even if they stayed dedicated and active I doubt either Tyson or Fraizer would've been able to stay in top form past the age of 32 or 33 just because of the fighting styles they have. Tyson himself admitted the peak-a-boo style is a optimal for a young man (18-25) in peak physical condition.

Wlad on the other hand didn't start looking past prime until the age of 36. Larry Holmes also didn't start looking past prime until he was around 34.

 

For clean fighters, physical prime ends around 32. For Bernard Hopkins, 49.

 

30-32

 

depends on weight class the smaller you are the faster you usually Burn out because they rely on speed and technic Forman and Hopkins on the other hand fought on in to old age

 

The average guy probably hits his physical prime in his late 20s. By 30, I'd say the average athlete has seen his physical prime come and go.

I know recovery after hard efforts got considerably harder for me in my 30s. Now in my early 40s, it is even longer.

Harder to be in your physical prime when you are constantly recovering from the last effort and unable to fully commit to the next one.

 

Yeah this is true the older you get the more you have to adjust your training to compensate. Less volume or less frequency to allow more recovery time is necessary now. Because as you say it's much harder to recover from training sessions as you get older.

 

Well I'm 26 and hardly an elite athlete. Just a regular guy who tries his best to stay in shape.

But I have noticed that my fitness and ability to to do things with my body is better than ever. And I cant imagine it really getting any better. Like I said I'm not a great athlete.

But I was just on the basketball court last week and was being defended by a pretty damn good athlete in his younger days. Much more so than me. Hes 43 and I would blow right by him.

It's just biology. From 0 to 25 your body is producing more new cells than cells that die. From 25-30 it's about even. And then from 30 on the body loses more cells than it produces.

So after 30 you pretty much literally begin to die. Thankfully it's about a 50 year process. Death that is.

 

31 for most but for the few who are gifted with superior genetics I believe their peak can last another 2 to 3 years past this age.