Sit well back into the seat with your back against the chair’s back.
While using computer or laptops, let your elbow rest on the desk or the chair’s arm rest, with fore- arms and hands stretched straight ahead.
Make use of options that make desk jobs more comfortable, like chairs with adjustable arm rests that allows the chair to be slid underneath the table, external keyboard and mouse, laptop raiser etc.
Go for a diet of foods of low glycaemia index.
Substitute coconut water, lemon juice etc for tea and coffee.
Move about as much as possible. Regularly flex or exercise the wrists, hands and fingers.