Depending on your age, physical strength, and any illness that you may suffer from, the suitable intensity of exercise can vary. Exercise does not always have to be vigorous and strenuous. In fact, most benefits come from moderate-intensity exercises. Based on your current state of physical fitness and health, you could do light activities such as walking, stretching, and gardening. You could also engage with moderate activities such as brisk walking, cycling, dancing, and swimming, or vigorous activities such as running, aerobics, and intensive cycling. At the end of the day, it is entirely up to you.