Tracking previous workout performance, such as weight and repetitions for lat raises, is essential for implementing progressive overload and achieving success in fitness training.

“It's very difficult to understand and remember, well, the last time I did lat raises, I used I think 5 pounds. And I think I did like 12. Well, if you don't have some sort of system of tracking-- and this can be as simple as a notebook, just writing down what you did before and doing a little bit more the next time. That is going to almost guarantee you success.”