How many sit-ups one does overall is dependent on the individual level of fitness. Definitely do not do more than 30 repetitions without having a rest. People who try to do 50 or more repetitions ...

“You can carry on working your tummy muscles doing sit-up style exercises up to around 16 weeks," advises Lucie Brand, personal trainer and founder of bump2mumfitness.com. But Brand says that if you ...