Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Muscles out of nowhere?

  1. Aug 12, 2011 #1
    I noticed that I am building a very visible amount of muscle in my arms and upper chest area. I have not been lifting weights or anything, where is this muscle coming from?
  2. jcsd
  3. Aug 12, 2011 #2


    User Avatar
    Staff Emeritus
    Science Advisor

    How old are you? If you are young then this is a fairly typical occurrence.
  4. Aug 12, 2011 #3
    I am 23 years old.
  5. Aug 12, 2011 #4


    User Avatar
    Staff Emeritus
    Science Advisor

    There could be a number of reasons. Diet, exercise (not just lifting weights, just regular things like walking) etc. It might be rare but I don't think it is unusual for men even in their early 20s to undergo puberty like growth spurts in muscle mass.
  6. Aug 14, 2011 #5
    I have been losing some body fat in various torso regions.
  7. Aug 14, 2011 #6


    User Avatar
    Gold Member

    What has changed in your life recently? New job? Summer sports?
  8. Aug 15, 2011 #7
    I am constantly turning over in bed at night because I can't sleep. Perhaps this repetitive action developed arm and pectoral muscle.
  9. Aug 15, 2011 #8


    User Avatar
    Staff Emeritus
    Science Advisor

    Doubtful. If you think something is wrong with your health go see your doctor. There is far to much variance in biology to come up with an accurate answer over the internet.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Muscles out of nowhere?
  1. Mental muscles (Replies: 9)

  2. Muscles and veins. (Replies: 1)

  3. Sk. Muscle (Replies: 3)

  4. Modelling Muscles? (Replies: 8)

  5. Muscle Toning (Replies: 1)