low cholesterol?

• 死に物狂いで生き急いでんだ

has anyone ever had low cholesterol before? i got blood work results back and my cholesterol levels came out lower than normal. i’ve honestly never heard of someone having low cholesterol and searching online isn’t giving much information. my doctor advised that i start exercising regularly, however i’m curious if there are lifestyle changes i should be making, such as certain foods that would help increase the ‘good’ cholesterol. if anyone has experienced this or have some tips on this it would be greatly appreciated!