Last Monday, I was able to flat barbell bench press 145 for 5 reps for 2 sets, with each going to failure. So yesterday, I tried to do the same exercise with the same weight for 3 working sets, but with the goal of being able to do 7 reps on each set. However, I unfortunately was only able to complete 5 reps to failure on the 1st set, then only 4 reps to failure on the 2nd set, and then only 3 reps on the 3rd set. For the 3rd set, after I completed a 3rd rep, I felt like I was probably going to fail in completing another rep, given how I realized that at the end of the last rep the bar seem to be significantly slowing down unintentionally and the fact that I was only able to do 1 less rep on the 2nd working set than on the 1st working set.
As a result, I decided to end the last working set with just 3 reps. Furthermore, I went to my Hapkido class the day before yesterday and we did a lot of punching, a couple sets of about 10 diamond push-ups and a couple of sets of 20 dips on a bench. In addition, I also did a full max-effort lower body workout from the WS4SB program on Tuesday, which actually I usually do on either a Friday or Saturday of the week.
So, I wonder if doing those exercises during my Hapkido class along with doing the Max-effort lower body workout on Tues. had affected my bench press performance on Thurs., or if I need to do something like Rippetoe explains whereby I would decrease the load on the bench press for a few workouts until I have recovered enough to go back to the weight that was missed, 145 and then be able linearly progress on the exercise again for at least several more workouts.