How to concentrate for 3 hours during cat mock?

Hi Harish,
One of the many reasons to take mock CATs is to get yourself accustomed to concentrate for 3 hours. It's just the beginning of the mock season so if you are not able to concentrate, don't worry. Just keep taking mocks and you will get used to it. Another thing that you can try is to take sectional tests. Instead of taking a full length mock, take a sectional test, take rest for 15 minutes then start the second section, then take rest for another 15 minutes and take the third section. As you progress, keep reducing the rest time that you take between sections. It will help you improve your concentration
Thanks