Roman,
Thanks for this. A few thoughts here.
In general, I don’t recommend that anyone follows a program that has very little exercise variety, focuses on a single rep range to the exclusion of others, has no auto-regulation, and does not include some dedicated conditioning work. If this style of program gets someone into training or improves adherence for a particular individual, that’s great, but I’d aim towards fixing these shortcomings.
Let’s break this down a bit further:
Reduced exercise variation hampers motor learning and tends to increase injury risk. This is the opposite of what one may “logically” conclude if they’re unfamiliar with the current evidence on both topics, but the data on increased exercise variation being better for these outcomes is substantial.
Reducing rep range variation limits muscular adaptations to a specific task rather than developing a broad range of capacity, which requires exposure to different rep ranges.
Without any auto-regulation it is very difficult to control the training load imposed upon the individual, which increases risk of injury and tends to result in worse performance outcomes.
We would recommend that everyone meet the current guidelines for physical activity, which includes dedicated aerobic exercise. Increasing cardiorespiratory fitness reduces the risk of developing a number of diseases and premature mortality.
Finally, there is overwhelming evidence suggesting that training-induced adaptations occur independently of age, sex, or race. Therefore, we wouldn’t tell you that you are “old” or that there are any age-specific training recommendations. You are not old and you’re not fragile.
As far as what you should do, I’d probably just run our free Beginner Prescription (or template) until it stops working and then move on to one of our templates based on your preferences. There is no reason to continue to run the program you are right now given the shortcomings noted above.
-Jordan