A heartbeat & body sound effect, generated with audiocpp-stable-audio-3-sfx from the prompt below. Copy the prompt, change a word and generate your own version.
human heartbeat at rest, slow double thump about once per second, deep chest resonance, very close and internal, seamless loop
Generated with audiocpp-stable-audio-3-sfx. These models respond to material, action and space, so the most useful edit is usually swapping one concrete noun for another.