The National Institute on Aging at NIH website, provides information on forgetfulness so that you can you can know if you need to ask for help and Understanding Memory Loss to help you differentiate between mild forgetfulness and more serious memory problems.
The NIA web page also offers Go4Life, an exercise and physical activity campaign is designed to help you fit exercise and physical activity into your daily life. Motivating older adults to become physically active for the first time, return to exercise after a break in their routines, or build more exercise and physical activity into weekly routines.
You can also order free Publications on subjects of interest to the aging population, that can be shipped to any U.S. address, such as:
Exercise and Physical Activity
Making Sense of Health Information