The declining health which comes with age can be overwhelming. This may simply be a matter of natural aging processes or because of chronic health issues. Oftentimes, it is a combination of the two. No matter the reason, it is important to stay happy and as optimistic as possible during these situations. One way to boost your happiness is by doing something that makes you happy. The following 4 hobbies require minimal physical exertion but will keep your mind sharp and help you have a positive outlook despite health obstacles.