I’ve been asked to provide a link to the smart scales I use, really clever blue tooth and give you a host of information including your metabolic age I got mine off Amazon for £15.00https://www.iroffie.com/s2081
The best exercise you can do to strengthen the upper body is a press up it’s also a great way to tone up the triceps (bring the hands closer together) take a look at the video on this link and start