A clause expressing a wish or suggestion can be put in the subjunctive.
My dear friend, I have been observing you closely for the last two months. You fall sick too often nowadays. What I have observed is it may be because of your unhealthy lifestyle. Also, you are engaged in very less physical activities. I wish you were more healthy and happy. I want you to be cheerful and active like old days.
So from now onwards cut down the intake of all junk foods you were consuming regularly. Include fresh fruits and vegetables in your diet which will supply you with essential vitamins and minerals. Try to sleep early and get up early and take a morning sunlight bath which will help with vitamin D deficiency and your overall mood.
Try to exercise at least four times a week. Physical activities and movement are very important for our bodies to remain active and fit. Exercise will keep your mood regulated and will also strengthen your immune system.
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