What role does physical activity and exercise play in maintaining focus during HP TET preparation?

How does incorporating physical activity and exercise contribute to sustaining focus and concentration during the preparation phase for the Himachal Pradesh Teacher Eligibility Test (HP TET)? I am interested in understanding the specific benefits and strategies related to maintaining mental acuity through physical well-being during the rigorous preparation for HP TET. Additionally, could you provide insights into the recommended types and durations of physical activities that candidates can integrate into their study routines to enhance overall focus and concentration levels as they prepare for the HP TET examination?