I second what Corrine and Cari said. Muscles inflame... they really do! Check out a marathoner's legs a day or two after the big run. Whoa! Think of inflammation like a construction crew. Lots of stuff going on, extra traffic, and congestion as houses are repaired and constructed (building muscle fibers) but when the crew leaves you have a quiet neighborhood again (sleek and stronger muscles).

That's why guys who pop ibuprofen everytime they work out just can't seem to build muscle - they've shut off the inflammation response so the construction crews never get to do their job.