Hello, Julia! Nice progress, you are so inspiring! Jumping rope routine is great for your heart strength and losing more weight. You can easily check it out using any calorie counter you trust! Start with 50 jumps and add a few with every day to reach 100. Avoid jumping too high, like all beginners do, that`s how you put much pressure to your knees and feet. Feel the balance, jump on your toes to use natural body absorbing mechanisms. Mind that you need to warm up before the training and cool down afterward with some yoga stretching. In a week you`ll see the first results in weight loss and muscles toned up. Good luck!