text: can i feel better in just 4 weeks? i am going to do a trial lifestyle adjustment to see if i can make myself feel healthier. i am going to sleep 8 hours a day, give up all junk food, have proper nutritious meals, do daily exercise and eat plenty of fruit and veg. will this help me to feel healthier or will it take longer to feel the benefits? yes!  i've been doing that for six weeks--no junk, exercise six days a week, and eat only fresh fruits & veggies & whole grains.  i love it!  i feel better than i ever have.  you will probably start to feel better in the first few days, especially from exercise.  the physical and mental benefits of daily exercise are amazing.  good luck!