Re: The Fitness Thread !
1) Free hand squats 3 sets x F
2) Push-Ups 4 sets x F
3) Pull-ups 4 sets x F
4) Bench Dips 4 sets x F
5) Prone Bridges 3 sets x 30 secs (increase 5 secs every week)
OR
6) Reverse Crunches 3 sets x F
^^^^^ Do this 3 X week, mon/wed/fri OR tue/thurs/sat.
Do prone bridges one workout, reverse crunches the next.
PS: All exercises can be done @ home. U just need something to hang on to for pull-ups/chin-ups. Do in the same order as given, F = as much as u can with proper form.
Force yourself to do more reps everytime 
EDIT: However since u want a tight tummy and hard chest (human body is not like a PC that we can add RAM to it and change cabinet that easily... this is wrong approach as the human body works best in a synergy) U may consider doing:
Push-ups (5 sets to failure) every third day with prone bridges OR Reverse crunches every alternate day.