I usually play with arm sticks, hand grips and wrist devices as toys, but the effect is not great. I can play occasionally. I exercise in regular training programs, and the effect can't be said to be no, but it's not obvious either.
You'd better practice push-ups. If you can't do one, stick to the limit there every day, which will help you in the early stage of exercise. I found some videos for your reference.
breast
/v？ s = 8 & ampword = % D4 % DA % BC % D2 % c 1% B7 % D0 % D8 % BC % a 1 & amp； fr=ala 1 1
abdominal muscle
/v？ s = 8 & ampword = % B0 % CB % B7 % D6 % D6 % D3 % B8 % F8 % C4 % E3 % c 1% F9 % BF % E9 % B8 % B9 % BC % a 1 & amp； fr=ala 1 1
Both videos are 8-minute animation series, which are divided into three levels. If there is a simple and difficult video, start exercising from the first stage.
I hope I can help you.