12 rep max/20 rep max... number of times you can lift weight X... say you did deadlifts... and your 1RM (one rep max) was 100 pounds... or kilos if you prefer... you might be able to lift 90 5 times without being able to do a 6th, so your 5RM would be 90. Etc.
That's a heck of a lot to do every time you work out... could you do 1/3 of that each time you work out and work out for less time but heavier effort on each exercise overall? Are you doing this same basic workout 1x/week or 3x/week or as you can work the time in? Variety and not doing the same thing every time will stress and grow your muscles more over time than doing the same thing and stagnating as your muscles get used to the movements, even if you're slowly increasing weight...
Definitely don't want to mess up the lifting either... do you have access to a local coach or trainer that you trust to review your form?
Probably should make your planks harder if they're no longer challenging... raise your feet/work toward handstands perhaps?
no subject
That's a heck of a lot to do every time you work out... could you do 1/3 of that each time you work out and work out for less time but heavier effort on each exercise overall? Are you doing this same basic workout 1x/week or 3x/week or as you can work the time in? Variety and not doing the same thing every time will stress and grow your muscles more over time than doing the same thing and stagnating as your muscles get used to the movements, even if you're slowly increasing weight...
Definitely don't want to mess up the lifting either... do you have access to a local coach or trainer that you trust to review your form?
Probably should make your planks harder if they're no longer challenging... raise your feet/work toward handstands perhaps?