Jack Dempsey

I know he was an early practitioner of Ju-Jitsu.

 

I saw some footage of him doing straight leg sit ups, pushups and using pulleys while punching. In his book he mentions the importance of shadow boxing and actual sparring. I think he also mentions diet in his book.

 

It’s called Championship Fighting by the way.

 

Drop the money on Pollack's book. He goes into the early training camps a bit.

 

“sparring and hitting the bags is the key to developing punching power. For conditioning, you need roadwork, skipping rope, and Calisthenics, I believe also in flexibility work using wall pulleys, and by doing "push-ups" from the floor.”

 

“A fighter should avoid heavy exercises like weight-lifting, for they tend to make him muscle-bound."

 

Theres alot of training clips of him on YouTube also like mentioned above his technique book called Championship Fighting is a must have for your boxing library

 

Adam Pollack (who is a member here) writes a great series called "In The Ring With" where he goes into amazing detail of early fighters.
https://www.google.com/search?q=ada...hUKEwiNmfvwzOHwAhUFw-AKHTnpAvkQ_AUoAHoECAAQAw

 

What does he mean by wall pulleys?

 

He did sprints to build his legs early on, with his brothers, so I’m not sure if he continued.

 

What do they mean by wall pulleys?