Reversible: problems are a different category than problems that come and stay. Furthermore, there isn't that much there at the pecs. Certainly muscle swelling can occur with exercise and hard, usually tender. Breast tissue, even in a man can change, but it would be a very small area (and soft).cannot say in your particular case, but generally,reversible problems aren't that serious esp. if not increasing.
Answered 10/25/2015
2.1k views
Hard to say.: The chest muscles could swell if you have used that arm more that day. Otherwise, I don't have a good answer. See a doc and find out what is going on to be sure there is nothing seriously wrong.
Answered 10/31/2015
2.1k views
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