I was weed eating with my Ego 56v and when I finished, my right bicep was trying to contract afterwards. The cause? Not having a shoulder support So I'm ordering one today and taking a couple days off from the gym. Old age doesn't care,it effects everything.
Seriously though…
Amazing how little weight being held up by an arm and shoulder can be very hard.
Take a 20 pound dumbbell and try to held it perfectly level with your arm fully extended.. That 20 pounds get heavy fairly quickly.
I was doing front shoulder raises at 40 pound dumbbell in each hand… I did that constant 20 pound dumbbell hold and it was rough.