Icon Request: circadian_rhythm
Problem Statement
Sleep tracking, wellness, and health apps are increasingly focused on circadian biology and chronobiology. Currently, Material Design has icons for sleep (bedtime, nights_stay, bed) and sun (brightness, sunny, wb_sunny), but none specifically represent the circadian rhythm — the body's natural 24-hour sleep-wake cycle that regulates health, energy, and sleep quality. A dedicated icon would help apps communicate this concept visually.
Icon Description
- Basic Shape: A circular or curved design with a half-sun/half-moon arc and a body or clock element
- Key Features:
- A curved arc showing the transition from sun to moon (or day to night)
- A human silhouette or body shape within/around it (representing the human biological rhythm)
- Alternative: A clock face with sun on one side and moon on the other
- Alternative: A body with "energy waves" or bio-rhythm indicators
- Style: Filled or Outlined
- Scale: Should be recognizable at 24dp to 48dp
Concept Variations
- Sun-to-moon arc with body: Curved arc transitioning from sun to moon, with a human silhouette inside
- Body with internal clock: Human silhouette with a clock/bio-clock element
- Circular sun/moon cycle: Full circle with sun on one half, moon on the other
- Person with circadian wave: Human silhouette with a wave pattern (like the circadian curve)
References
- Related icons in Material:
bedtime, nights_stay, sunny, wb_sunny, bed
- Wellness apps: Sleep Cycle, Alarmy, RISE, Apple Health, Fitbit
- Scientific representations of the circadian cycle
Justification
- Sleep wellness is a multi-billion dollar industry
- Circadian biology is increasingly understood by the general public
- Currently no icon representing this holistic concept
- Health apps need this for sleep tracking and health monitoring
Use Cases
- Sleep tracking apps (Sleep Cycle, Pillow)
- Wellness/health apps (Apple Health, Samsung Health)
- Alarm clock apps with smart wake-up
- Bio-hacking/morning routine apps
- Health monitoring dashboards
- Fitness apps with sleep recovery tracking
Search Keywords
circadian rhythm, sleep cycle, body clock, biological clock, sleep-wake cycle, chronobiology, sleep health
Similar Existing Icons
bedtime - moon + person sleepingnights_stay - moonsunny - sunbed - bedalarm - alarm clock
Verification
Note: I understand that Google Fonts does not accept user submissions of finished icon designs (like SVG files) due to strict design guidelines, and that this repository is generated from upstream source files. I am submitting this as a concept for discussion, not a finished design.
Icon Request: circadian_rhythm
Problem Statement
Sleep tracking, wellness, and health apps are increasingly focused on circadian biology and chronobiology. Currently, Material Design has icons for sleep (
bedtime,nights_stay,bed) and sun (brightness,sunny,wb_sunny), but none specifically represent the circadian rhythm — the body's natural 24-hour sleep-wake cycle that regulates health, energy, and sleep quality. A dedicated icon would help apps communicate this concept visually.Icon Description
Concept Variations
References
bedtime,nights_stay,sunny,wb_sunny,bedJustification
Use Cases
Search Keywords
circadian rhythm, sleep cycle, body clock, biological clock, sleep-wake cycle, chronobiology, sleep health
Similar Existing Icons
bedtime- moon + person sleepingnights_stay- moonsunny- sunbed- bedalarm- alarm clockVerification
Note: I understand that Google Fonts does not accept user submissions of finished icon designs (like SVG files) due to strict design guidelines, and that this repository is generated from upstream source files. I am submitting this as a concept for discussion, not a finished design.