I am a 44 yr old male. I have been lifting weights for 3 ~ 4 yr now. The beginning was difficult, but in the last 2 ~ 3 years I have made progress without injuries.
I hit the gym twice a week and, after much trial and error, I am positive that it is the right frequency for me at this stage of my life, and I am not willing to discuss this point.
I have recently inserted deadlifts once a week in my routine.
I wonder if that is enough or if I should do twice a week (I train twice a week, so it is either once or twice a week).
I am not interested in "optimal" progress, but rather in "any" progress at all, no matter how slow. Deadlift may be a risky exercise and I am happy with the least amount of it that still produces results. If each time I become deconditioned because a week is too much, then it is useless.
Remark: I am currently doing full body twice a week, but with different exercises. Day B has bench press where day A has push ups. Day B has barbell row where day A has inverted row, and so on. The goblet squat is the only exercise that repeats.