how can i tell if i put on fat or muscle?

[MaN BoObES]

Last night i weighed myself for the first time in about a month. I was shocked when I saw 240 on the scale. I had been 225ish in september. I dont know if i put on more fat or put on muscle. I know my chest has gotten bigger with some muscle along with my back. But 15lbs? How can I tell?

[BigMatt]

Measurements and your waist.

[Shao-LiN]

If you look in the mirror and don't cringe too much, I'd say you put on muscle. =)

[ryuage]

darn, I must be puting on fat then =\

[Jezmason]

If you look fatter, you're putting on fat, if you look more muscular, you're putting on muscle.

[Jezmason]

Suprisingly.

[Dirt]

You're gaining weight too quickly for it to be mostly muscle, so likely you put on quite a bit of fat. 15lbs in one month (but why did you say you were 225 in September but hadn't stepped on the scale in a month when its the end of November now?) naturally probably means at best you put on 7-8lbs of muscle and 7-8 lbs of fat. Also, haven't you been cutting for the last few months? If so, why are you gaining weight so rapidly?