I love running and it was awesome to complete my first half marathon. I do plan on doing other races in the future and don't plan on stopping. That being said, I feel like I lost some muscle with all the training I did for the half marathon. I want to really focus on building muscle for a while.
All the doctors I consulted with when I did my abdominoplasty (tummy tuck) said that my arms and chest could tighten with more muscle. I'm lucky that my skin isn't as bad in those areas as my belly was the most problematic in terms of excess skin.