"u only have to do 4sets of 25 each day. Easy peasy but every body is different "

NO NO NO NO NO NO NO!

If you can do 25 without stopping you should be doing weighted ones or more weight.

also you cannot spot reduce fat, this is not my opinion, this is fact.

You can build the muscle and keep the same body fat % , you jsut end up with a 6 pack covered in flab.

Compund excersises that do the whole core and DIET to reduce body fat % then once youve lost a lot of the flab you can start concentrating on individual muscle definition.