Fort Mill's Confederate Park contains the nation's only monument to African-American slaves who fought on the Confederate side of the Civil War. Rock Hill is the largest city near Fort Mill. Here is a map of the Rock Hill area.
Apply arnica ointment or gel daily. Arnica is an herb that reduces inflammation and can help reduce the appearance of bruises quickly. It is available in cream or gel form at most drug stores. Apply a coating to the affected area twice daily until the bruise goes away.
There are several theories as to what might cause the pain, the most predominant one being that muscles in the chest get micro-tears when working out. Overstretching and muscle spasms are other possibilities. Once the muscle or tissue heals after a few days, the pain goes away.