The ease with which you can answer these questions likely varies. Your spouse's birthday probably isn't that difficult.
Breakfast quickly becomes a fading memory once lunchtime arrives.
That's a bit tougher. It is impossible to remember all the information we take in each day. Yet many of us question our memory and its capabilities. Research indicates that memory peaks at age 20 and begins to decline thereafter. So, memory difficulties and changes are not uncommon once adults reach their senior years.