Evidence suggests that physical activity may be linked to improved concentration. Join a gym and/or play sports regularly and you'll be more focused again.
Eating too much (especially unhealthy food) can make you feel really uncomfortable and sleepy. Eating too little on the other hand can limit your energy. Both of those cases will lead to problems with concentration. Improve your diet and balance your meals to start noticing the improvement.
If you don’t receive the email in the next 2 minutes please check your junk folder, and add [email protected] to your safe sender list.