No - not house ladders!!! Invisible exercise ladders.
"You are your own Gym" App has really convinced me of the worth of this style of exercise. It is what is called "high volume - low intensity" strength building, which allows you to do a largish number of repeats of an exercise without excessive energy expenditure.
For example -- I can only do about 10 "classic, on the floor" pushups before my arm muscles fail, but I have just done a 5 minute workout doing only pushups and did 24 of them. This article basically explains how it is done brianmac.co.uk/articles/scn... -- but you can go up and down as many rungs in the ladder that you like. I only went up 4 rungs - 1-rest-2-rest-3-rest-4-rest 3-rest-2-rest-1-rest and back up the ladder again until the 5 minutes ran out --- result = 24 pushups done.
I had previously done it and achieved a large number of squats, situps and other exercises as per the Apps basic training plan.
For those (maybe) ladies here, who have trouble doing pushups - just try it using only a 2 rung ladder - you will be surprised just how many you can pump out in a few minutes.