Thanks everyone for the tips. A little background I will be 65 in Nov and have never been in a gym until 10 months ago. I am learning thru simple trial and error doing my best to not get hurt.
I first started out with no warmups and just did the 3 sets of 10 reps trying to pick weighs that cause muscle burning at rep 6. For 6 months this got me no where.
I had no mind to muscle connection and when I left the gym after 2 hours (including shower and swim time) I had no pump. I blamed it on muscle atrophy at my age.
A few months ago Loki posted his workout so I adjusted the weigh way down but did the sets and reps he was doing. My muscles started growing and I could now feel them working, the mind to muscle connection was finely happening. Something I noticed was my first two set were always my weakest and set 3,4,5 I could really pile on the weight and by set 6 I was wasted and spent most reps I did not make it to 12 failure was 6-8
So that got me thinking maybe I should be doing warmups before each exersize and not starting my set count until I'm warmed up.