10 months ago I was a smoker.After quit smoking i began to eat a lot and went from 75kg to 84-85 kg.Then I went to gym and on diet and now i have 72 kg.The problem is I don't have much time and can't go to the gym so i do make some exercise at home.I just want to build up some abs and chest but not necessarily for strenght,but for the look.I don't have time for cardio either,but i don't eat junk food,only 1-2 times a day a sandwich or something and i only drink 3-4 liters of water/day.
This are my daily exercise i do.
For chest: Only push-ups: 15 push-ups - 10 series
For abs: 15 Crunches-5 series
15 Oblique Crunches - 3 series each side
25 bycicle - 2 series
20 long arms crunches - 2 series
20 vertical legs crunches - 4 series
and 100 low leg lifts - 2 series

I don't neceseraly do this exercises all one after another.I sometimes take a break and do something else,and after 1-2 hours i continue,but untill the end of the day,I do all of this exercises,every day
I honestly think i do to much,and then,won't help me.I try to make them all corect,und build up as soon as i can.I don't expect to have a six pack in one month,but i would like in a few months to see some nice results.
Gould someone give me some advices? Thank you

only 1-2 times a day a sandwich or something and i only drink 3-4 liters of water/day.
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You need to eat more then this. Try eating at least 6 times a day, not only will you eventually boost your metabolism, you will be healthier, and can achieve that look that you want.

You can achieve a nice look by using your own body weight, but don't expect much size without weights. Also, for your push-ups use a chair or bed to prop your legs up to do an incline version of it. it will hit your upperchest. Just try to be creative when working out at home and you will get the results your looking for.

Hey bro!
Exercises using your body are good but you can't train all your muscle groups, so if you eat a lot but train not enough to cover the taken calories then you may get some fat.
I suggest you to save some money and buy a set of dumb-bells and a barbell, this will increase your exercise routine.

also by training other body parts, the 1's you want to grow will grow faster......

I recived from a friend two dumbbell- 5kg each and tomorow i also plan to buy an exercise ball for abs.I hope this will allow me to chose better exercices. I made myself other training program:

4 Times a week:

ABS:
Regular Crunch 2x15
Chested Leg - Crunch 2x15
Double Crunches - Chested Leg 2x15
Bicycle 2x20
Regular Crunch 1x20


CHEST:
Pushups-Chair(Upper) 3x10
Incline Dumbbell Fly(Upper) 5x12
Flat Bench Dumbbell Flyes(Middle) 3x12
Decline Dumbbell Flyes(Lower) 3x12
Pullovers (Lower) 4X12
Dumbbell - T shape 3x15

Cardio-Running for 20-30 minutes with 1 minute sprints.

I also try now to eat better and healtyear.I will make myself some menus to eat wat i need to have better results.

Should i also try other exercices too?Maybe something for my back?