Serious viral pneumonia is more likely to happen in those with a weakened immune system, such as: Babies who are born too early. Children with heart and lung problems. People who have HIV/AIDS. People receiving chemotherapy for cancer, or other medicines that weaken the immune system.
Lower back pain: How exercise helps. When you're in pain you may feel like resting, but staying active is good for your back. Exercises for lower back pain can strengthen back, stomach and leg muscles. They help support your spine, relieving back pain. Ideally, choose activities that involve endurance,strength and flexibility such as walking, swimming or cycling.
Swim your heart out. If youâre looking for exercise that improves heart and lung capacity, but is gentle on your joints, swimming is a top choice. Like other aerobic exercise such as running, it can improve cardiovascular fitness as well as cholesterol levels, provided you swim at a brisk pace. Aim to swim laps for 20 to 40 minutes at a pace that keeps your heart rate up.