Added section for Mental Health and Personal Fitness

Author: Michael Hurley

README.md

@@ -190,3 +190,7 @@ But knowing the stuff will help you become better! :muscle:*
 - :link: [LeetCode](https://leetcode.com/)
 - :link: [InterviewBit](https://www.interviewbit.com/)
 
+### Mental Health and Personal Fitness
+- :point_right: [8 Habits Proven to Help Enhance Cognitive Function](https://www.psychologytoday.com/blog/the-athletes-way/201403/eight-habits-improve-cognitive-function)
+- :muscle: [Simple Daily Stretching Routine](https://phrakture.github.io/starting-stretching.html)
+- :notebook: [Journaling Method for Better Thinking](https://www.toddbrison.com/microjournaling)