What are some ways to have better ergonomics when working with a computer? Rest your feet on the floor, move the mouse an arm length away from your body, and take no more than one break each day.
Rest your feet on the floor, use a chair with proper back support, and reduce glare on the computer screen.
Take short breaks, do not rest elbows, and make your screen as bright as possible.
Take short breaks, position your computer screen above eye level, and make your computer screen as dim as possible.