Find new ways to do things you already do! University of Texas brain expert Dr. Ian Robertson says our brain likes regular habits, which free up space to think about other things. But when we disrupt our ingrained habits, the unfamiliarity boosts neurotransmitter activity and communication between regions, which strengthens our brain. So find a new route to work, shower with your eyes closed, so your other senses work harder and brush your teeth with your non-dominant hand. That’s good for your teeth too, because you won’t brush so hard that you cause receding gums.