Ergonomics is the scientific discipline that adjusts for individual differences in an environment to place the least amount of stress on a person -in other words, making people as comfortable as possible!
Such factors include positioning, workstations/equipment design, temperature, noise and lighting among others.
Work tasks are often repetitive, whether that is for example sitting at a computer typing for hours, standing at a laboratory bench using pipettes for academic research, or custodial cleaning and housekeeping. Daily, repeated activities have the potential for injury.