What do i do to increase concentration?

Yoga : Yoga classes would be a good idea. You should also ask your physician to do a routine blood picture

Avoid distractions: There are many aspects to avoid distraction and improve concentration, including disconnecting social media/ email/phone calls, have regular meals, avoid getting bored, If on medications, suffer from depression or helpless ness, have short memory span or trouble focusing on tasks discuss your doctor http://www.webmd.com/add-adhd/ss/slideshow-top-concentration-killers