uh yeah, but you not gonna want it particularly. its just volume. volume means a lot of reps
start at a level you can easily achieve and do it for 2 weeks. Like 5 sets of 2 situps. giving little games and do it 5 or 6 days a week.
Make it so easy that you can always succeed, it is never hard to finish or mentally convince you to give up. easy sets are easy to do many times, so you can get your numbers up.
pick it so small you can fail and do it 6 days a week for 2 weeks. THEN start increasing.
look out for the time your body feels weary and you dont want to even bother, you feel exhausted thinking about it, that is body telling you to do less, so you been going too hard, do less. it is very easy to get super motivated and do far too much to be sustainable. you want easy and sustainable. you MUST do things regularly for it to make a difference. so one-off hero efforts are pointless.
occasionally do the max situps you can to see what the number is.
for situps you want to be thinking of total volume in terms of 1000's, to do this easily, start at much smaller numbers, like 10 a day total, work up to 100 a day total and at quantities that aren't hard to complete. easy sets are easy to do many times, so you can get your numbers up.
when your motivation gets burnt out and you exhausted mentally, you gone too hard, cut it back.
if you are doing stuff every day for a year you will have serious differenec to your body. In 3 months you will really notice difference.
there are games you can do when your numbers are up, like take a deck of cards, then take one and do the number on the card. face cards are all 10.
every deck is like 500. then put 1/4 deck or 5 cards or whole deck, some number at start of day, and when you're bored, take another card so that you get through it by end of day.
or just do sets and reps.
10 situps, 10 times with breaks
keep it at a level it isnt dificult and you can do big numbers, but dont raise the total volume too abruptly or your body gets weary and burnt out and takes weeks to get over.
like you do 100 a day 6 days a week, 1 day do 120
then week after that 2 days do 120
week after 3 days do 120
and so on,
then all 120's then do a few weeks of 120
your body adapts to local strain and total strain per day.
it is the repetition many times at a sustainable rate that builds you big.
diet and so on is overthinking it, focus on picking a number and sticking to it.
and CHART the numbers. log it in an excel file or something how many you did that day so you can track it. if you dont you wont realize how far you come. You will be disappointed in yourself how much pride you feel in writing a number in the box each day.