At the same time, its important that you can take enough rest. Getting adequate sleep is also important to ensure optimum testosterone levels in your body. You must make sure that you get to bed early and sleep for at least 7-8 hours each night. Ideally suited for a wide range of applications, the PURe® aluminium windows are available as tilt and turn or casement windows. Senior’s innovative door range also features a choice of the PURe® FOLD and PURe® SLIDE options. Some arthritis, such as rheumatoid arthritis and lupus, affects multiple organs and causes a wide range of symptoms. Arthritis is often associated with the elderly, but it can also affect children. In the UK, about 15,000 children and young people are affected by arthritis.