Are there any exercises i can do to alleviate pain from costochondral separation?

Ouch!: Unfortunately, cartilage (costo- ribs, chondro-cartilage) is very slow healing tissue. Need to take it easy for 2-6 wks & let tissues heal. Wrapping w ace wrap may feel better, but is controversial due to concerns re pneumonia. If you wrap take it off every 2-4 hrs & try to breathe deeply. Hugging a pillow may help w this. Ibuprofen if not contraindicated. Try exercising arms & legs. Walk in 2 wks.