Unable to do push ups..and arm strength is much needed me being a dancer ..what to do now ?
It would really help if you start by training weight (light weights) to build your upper body strength and then move on to push-ups.
Body weight exercises are the best. If you can't control your own body weight than weights will only inhibit your full potential. There are tutorials online that will show you how to scale your push ups. Every without can be scaled with allows the person to gradually work on form. Search "crossfit scaled or modified push ups".
Youy must try out the other strengthing exercises like Bird Dog,Hip Bridge etc. With Bird Dog you can improve the hands, feet and muscles coordination and with hip bridge helps in stimulating muscles which results in a good posture.
Planks!!! All kinds of planks with help strengthen your core and arms, making it easier to do pushups. It took me a long time to build up the strength, and I can still only do 5 solid in a row, but you need to have patience and put in the work!
Along with making your arm strong by working on it, you need to have proper diet that gives you strength and protein but not fat. And yeah you can try half push-ups first for a few weeks and then eventually turning half push-ups to full push-ups. Do as much count you can do at the starting. But remember you have to increase the count eventually, as your body will accept changes and grow more strong only if you push the limits everyday. Also you can try elbow plank as it gives strength. I hope this will help. Good luck.
Give ur num