^ forget about push ups.
Wear wrist weights while you are at home, doing things actively (no matter what - cooking, cleaning, teeth brushing ... ) - start with a pound, after a month take 2 pounders for each arm. 1-2 hours a day.
Expect aching muscles after 2 days, but then first visible results after 4 weeks.
You'll not even recognize that you do a "work out", and it's very effective.
Oh wow, Kaiserin. That’s a great idea. Thanks!