Thanks Karky,

Another question...

if i start doing 2 HIIT sessions 15 mins long each how much more calories should i eat daily to continue to gain weight ( i eat about 2500-2800 daily now and ive gained 9.5lbs in a little bit over 5 weeks ).

that really depends. I dont know how much you burn, depends alot on intensity and stuff, so its really hard to tell. Maybe someone else can give you an estimate, but it would be a very rough one, since everyone will be different. But just eat a bit more that day.