Working out is simple if you know what to do.
I think it's probably best to work out in the morning to get it out of the way. My ultimate top tip is to drag yourself, even if you have to roll yourself out of your bed and in to a sit-up - it's really not that bad once you start.
My go-to prebikini flat-ab move is the plank, all different types.
A muscle is like a car. If you want it to run well early in the morning, you have to warm it up.
I do a lot of core strengthening exercises and the plank push up is a great one that you can do anywhere and anytime.
For girls who want to get their waistline down a little bit and don't have any weights in the house, they can actually use a broom and put it behind their necks, lap over it and twist and squat. I do all of that if I don't go to the gym.
I love to run and I have some tips to keep it fresh and novel. I rarely use the same route twice. That keeps things new.
To do Pilates moves correctly, you'll need to concentrate on your abs - keeping them pulled in and up - at all times.