Mom is always cold. She’s only 62… trying to figure out if this is normal.

Being cold is one of the symptoms of hypothyroid. People also vary in need for heat, and have differing activity levels. Were she less active your Mom would likely be even more chilly. Any movement warms one up quickly, so that caregivers and those they care for often suffer from differing needs in terms of heat.
Make certain that your Mother's thyroid testing is done on a regular basis and that she is taking the correct dosage of medication. Layer clothing so that your Mom wears something warm under her clothing. Often silk long underwear helps people.

As said, 62 is now considered middle age. It is probably her Thyroid.

"Symptoms of hypothyroidism can include fatigue, depression, and feeling cold. Cold intolerance is a well known symptom of hypothyroidism. Hypothyroidism occurs when the thyroid gland does not produce enough thyroid hormones. These hormones help regulate metabolism and temperature"

Yes hypothyroidism can cause symptoms of feeling cold. Other conditions can too, eg anemia, diabetes, blood vessel issues. Your Mother's thryoid problem is hopefully being treated - just have to manage the indoor temp with a reasonable compromise I suppose.

I am always way colder than the rest of my family & am sitting here now under my gorgeously puffy sofa blanket 😁. I often wear a beanie in winter, even indoors as this really keeps me much warmer. I do use the heater but am old fashioned & prefer to put on a jumper like my grandparents taught me.

Maybe a gift for Mother's Day of a super warm fleecy indoor jacket, down vest or an alpaca wool throw rug? (Then restore normal heating levels).

If you called a 60 something a 'senior' to their face here you'd probable get quite a frosty retort back that they were certainly not!! Very much depends on location & culture I think.

My Grandma used to joke about 'getting your bus pass at 60'. Currently the age is 65 to get a senior's card (for transport & pub meals discounts etc). But aged pensions have been pushed further back & won't start until age 67 for the next gen.

Pisces, what other things are 'going downhill'?

Old people are always cold, not much you can do. It gets worse and worse as they age. No, 62 is not a senior. Not by a LONG shot. Do you live with her? If you do, move out and set the temperature at whatever you like at your own place. 62 is too young to need a caregiver, especially if she has no real health issues as your profile indicates.

Apart from the thermostat wars (which seem to be so common in families that, yes, I think you would call it normal), what are the "some things" which are going downhill healthwise?

I am 57. Senior is always twenty years older than you are, is the rule of thumb. So no, I cannot consider your mother a senior.