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If he is loosing muscle mass at 48 without a significant change in his activity level he may want to ask his doctor to check his Testosterone level. Low T will lead to muscle mass loss, low energy, loss of libido (we don't need to know the details). Its an simple blood test. Might want to throw in a Thyroid panel as well.

You cannot reduce one area of your body at a time. You can only reduce the whole body. Be patient. Stay focussed on your goal. Celebrate the achievements you have made rather than on the those you have YET to acheived! By all means, start working on strengthening and toning your chest, arms and legs through weight…