US Navy Sailor trying to get back into shape

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Just a married sailor trying to get into shape with his wife. This is a fun journey these past 2 days eating right and going on 3 mile walks a day. I'm trying to lose 40 lbs because I am tired of my body this big. I'm 200 lbs and I am embarrassed with myself but now it's time to get it going!! If you'd like some encouragement I'll help you and you help me!!!