Categories Articles Oura Rings Spark Safety Concerns After Overheating Reports on Reddit Post author By crystalg Post date December 13, 2025 Entrepreneur Tags After, Concerns, Oura, Overheating, Reddit, Reports, rings, safety, spark ← The best thing I bought this year: a portable mechanical keyboard → Figure AI CEO says over 170,000 people have applied to his robot company in the last 3 years. He hired fewer than 500.