Category 1 | No limitation Activities include endurance training, athletic competition, contact sports |
Category 2 | Moderate exercise Including regular exercise—for example, running, tennis, football, aerobics |
Category 3 | Light exercise Including recreational swimming, cycling, golf |
Category 4 | Moderate limitation Able to attend work, etc, but no regular physical exercise |
Category 5 | Extreme limitation Housebound or wheelchair activities only |