yes, also visit new places which you never seen, sport activities and also time with family and friends make mentally fresh to do better research

usually after an hour or two, you need a walk for 5 minutes

thank you for the solution, this is good for me and reminds all researchers too

Go to remote place where you find silence and peace and do meditation about 10 minutes you will recharged definitely.

toilet

Yes, taking a walk outside and listening to relaxing sounds/music is very good for research. Taking in little bits at a time when refreshed is better than cramming a lot of information on one marathon session. :)

Farhad S. Dizayee surely, one of the causes of back pain