Poker acts like Pushups for our brain. It strengthens your brain and shields your nerve cells. Playing poker can help to rewire your brain and help to create myelin for a longer run. When we perform any activity consistently, it leads to the creation of new neural pathways.
It's primarily a skill game, although luck plays a huge role. In any single given hand, luck is the predominant factor in who will win or lose. However, poker players don't play a single hand. They play hand after hand after hand & and overall, skill dominates.