Connections Hint Today Sat, Jun 7 #769

Need help with Connections puzzle #769 on Sat, Jun 7? Get your daily connections hint today! Find the hidden links between these 16 words: BREATHE, HYDRATE, REST, STRETCH, FOUND, INSTITUTE, LAUNCH, START, AIR, NUMBER, SONG, STRAIN, CHICKEN, EQUINOX, FLING, ONION