The health meter in video games wasn’t always so commonplace. It took time, iterations, and various incarnations before it converged to what we know now. Ahoy describes the history:
History of the health meter in video games
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Sleep Schedule, From the Inconsistent Teenage Years to Retirement
From the teenage years to college to adulthood through retirement, sleep is all over the place at first but then converges towards consistency.
The Change My Son Brought, Seen Through Personal Data
I combed through personal data that I’ve actively and passively collected since early graduate school to see how life is different now with a 6-month old.