Set your phone alarm for each 60-75 minutes.
Stand and stretch; lean your head to the right, then left, trying to touch your shoulder.
Turn your head and look hard left for several seconds, then right.
Roll your head chin down, to the side, looking up, to the other side. Then roll in the other direction.
Lean your body to the left and slide your left hand as far down your leg as possible; lean the same to the right. Standing straight, twist your upper body to the left and then to the right.
Lean back as far as safely possible.
Move your fingers as if you are playing a piano fast.
Take a drink of water and head back to the machine!
Your body will thank you even if your concentration is annoyed, LOL!