Even after 4 weeks of not training (which was for most of us over the Christmas period) taking up Reformer Pilates, can make significant changes in more ways than you think.  

A study showed that women who participated in Reformer Pilates classes after 4 weeks of no physical exercise, had significant increases in muscle mass, corrected arm and body composition. And it also it helps people with chronic lower back pain.  Pilates showed significant improvement in pain relief and functional enhancement too.