Medical conditions known to cause swelling that affects both legs equally include heart disease, kidney disease, liver disease, and chronic sleep apnea, and complications of diabetes. Premenstrual syndrome (PMS) is also a well-known cause of swelling in the ankles and feet.
Definition of serendipity for English Language Learners. : luck that takes the form of finding valuable or pleasant things that are not looked for.
I think these have a certain poetic beauty and richness about them, and the meanings are equally uplifting: 1  Effervescent - vivacious and enthusiastic. 2  Epiphany - sudden and striking realization. 3  Quintessential - most perfect example of a quality or class.  Serendipity - A sweet coincidence (see comment by Kundan Bhaduri)