For you, I think it is enough to start doing push-ups. There is no requirement for quantity, and the speed of falling and rising should be slow every time, so that no one can stand up when tired. (Triceps-Off-Shoulder)
Lift the biceps (inside the big arm) with dumbbells as shown above.
The arm may hurt the next day, which is the process of muscle tissue regrouping and strengthening. Don't do it at this time, drink more high-protein foods such as milk and eggs. Sleeping pills are guaranteed.
Long-term psychological preparation is needed for the work with slender legs. Running is definitely the best, the simplest and the most difficult to adhere to! Look at the marathon runner, his legs are all right! Keep running for more than 40 minutes every day, 1 month is valid.
Pay attention to rest, running and upper arm muscle training time are properly matched, nothing else!
Or when you practice skipping, don't practice in the same place all the time, you can run, so that you can practice your whole body and prevent local practice from affecting "beauty." I have caught "I mean, it takes a long time to practice skipping rope", and their bodies are all beautiful.