an excellent exercise, you can do it in front of your TV: sit on a
stool, and put your toes under something (piece of heavy furniture,
for example). In your hands hold a little dumbbell. Please, make sure
that it is not very heavy, start with one kilo, for example, or you
will damage your back and spine! Slowly move the upper part of your
body back, until it’s parallel with the ground. Stop for a second and
move it back to the sitting position. Repeat ten times. Every week add
to the number of repetitions. You will see the results in a week,
guaranteed! You will see or feel under the fat – if you have any – six
pack and muscles. Dumbbells do wonders. Much better than these crunches – I came up to three hundreds and there was no results AT ALL. With the dumbbells you will see it in a week.
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Just different types of sit ups and crunches. That specifically work the side abs and lower. Try holding things for 2 to 3 seconds should help and doing it for 30 minutes will be a great work out. If you are already doing all of that you should actually be seeing results since there is not much else to do. Try adding maybe a medicine ball into the work out to add some weight
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swimer crunches or full body crunches. lay on the ground hands togeather above your head on the ground. feet togeather. touch your hands to your toes, meeting in the middle. I do 5 sets of 20
References :

10 situps
10 V-ups (Touch your hands to your toes, but crunch your body so that they meet midway in the air)
10 lemon squeezers (Position yourself sitting up, put hands at side, and move your torso back into a laying position while extending your legs straight ahead. Now just row your legs to a bend while crunching toward them w/ your torso, then go back to laying position. repeat process)
10 back hypers (lay on stomach, basically a reverse cruncher)
10 Leg lifts (Lay on back, lift straight legs to 45 degree angle, then bring back to ground)
30 seconds of bicycles (Lay on ground, and mimick a bicycle pedal motion w/ your legs)
10 side crunchers each side
10 regular crunchers
30 seconds of flutter kicks (Lay on back, keep both legs straight. Lift them up bairly, now alternate between raising each leg a little bit and brining it back down. This one is tought at first, but after a week it will be easy. Try to think of being a swimmer while doing this one)
10 kick ups (Lay down, bring knees up toward chest, then kick legs upward to become straight in the air.)
10 side double leg lifts (Hard to explain, basically lay on side, and lift both legs simultaneously as high as you can. Will feel weird at first)
10 Forward Rows (Way too hard to explain, google it)
10 Russian Twists (Google it)
10 Scissor Kicks (Lay on back, spread leags apart in air, bring them back to center with one leg above the other, then alternate to mimick a scissor kicking action)
Finish with a bridge for however long you think you can do it.

Once this routine becomes easy, don’t up the reps, just do the whole routine twice. (Left a few out for explanation’s sake)

Then also do your run at night. Cut excessive fat out of your diet, but you can have a little still.

Do it and you will have some abs.

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