How can I gain and maintain weight?

Anonymous
Im trying to gain my weight back, I was 160 but for some reason I keep slimming down and I eat alot. I checked my weight last month I was 143 so I tried eating more but today I weighed myself and I was 137. The reason why I wana gain weight is because I was 125 the last 5 years, I literally stayed between 125 and 129 never gain much, people always asked my why im so skinny, do I even eat, just really annoyed me and made me feel too skinny. Just lasy year I started gain weight by just eating, the weight came out of nowhere. I like being alil thicker but now its going back down.
How can I get and keep my weight?

by the way im buying ensures tomorrow does that help as well?
How can I gain and maintain weight?
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