This is a very open-ended question. I think you need to let us know you current state.
If you're just starting out, getting a book on working out and eating healthy will get you 80% of the result for 20% the effort.
If you're already experienced, again it depends. Some people have already been mentioned like Tim Ferriss, Dr. Rhonda Patrick, Peter Attia, Dom D'Angostino and many more.
However you need to have the critical thinking to weed out what and how you could safely try some new theory. (say Intermittent Fasting or whatever new theory)
And I think after some time/experience you can go and pick up papers and judge them for yourself.
If you're just starting out, getting a book on working out and eating healthy will get you 80% of the result for 20% the effort.
If you're already experienced, again it depends. Some people have already been mentioned like Tim Ferriss, Dr. Rhonda Patrick, Peter Attia, Dom D'Angostino and many more.
However you need to have the critical thinking to weed out what and how you could safely try some new theory. (say Intermittent Fasting or whatever new theory)
And I think after some time/experience you can go and pick up papers and judge them for yourself.