This can contribute to a fall. Certain drugs, when taken in combination with other drugs, result in unwanted side effects such as blurred vision or dizziness which can also contribute to a fall. Keep your muscles in shape. There is no age at which exercise is useless. With strength in your arms and legs you will be in better shape to brace yourself or catch yourself if you fall.
Some people avoid falls by remaining in a chair or in bed for most of the day.
Remaining in a chair all day is an option of last resort. For others, fear of falling is stronger than lost independence. If you feel unsteady or have experienced a series of falls, make a note of what you were doing and how you felt just before your fell. Keep you muscles well toned and remember to slow your pace of walking and doing stairs if you suspect you are a candidate for a fall. In general, the faster you are moving the harder the fall.