References from the show:

* Types of soreness

* Wikipedia: Delayed onset muscle soreness (https://en.wikipedia.org/wiki/Delayed_onset_muscle_soreness)

* Wikipedia: Acute muscle soreness (https://en.wikipedia.org/wiki/Acute_muscle_soreness)

* A very helpful review on all things soreness

* Sports Medicine: Delayed Onset Muscle Soreness (https://link.springer.com/article/10.2165/00007256-200333020-00005)

* More articles

* BJSM: Stretching before or after exercise does not reduce delayed-onset muscle soreness (http://bjsm.bmj.com/content/45/15/1249)

* IJSPT: The effects of self-myofascial release using a foam roll or roller massager on joint range of motion, muscle recovery, and performance: a systematic review (https://www.ncbi.nlm.nih.gov/pubmed/26618062/)

* JAT: Effects of massage on delayed-onset muscle soreness, swelling, and recovery of muscle function (https://www.carolinashealthcare.org/documents/NorthEastInternalIntegrative/research-library/Massage/DelayedOnsetMuscleSoreness.pdf)