OK so basically the best thing Karen can do is to keep her diet balanced and exercise regularly to keep an appropriate bmi.
It will help you build muscle for sure but you will need to increase the reps if you want to improve further, it helps to build your biceps, pectoralis, and your deltoids
The universal machine is a weight training machine in the gym.
I think the answer is it prepares your body for necessary action because I learned something like anxiety and how it help you take action last year. I hope this helps you.
