Space time bridging - a meditation variation i found useful against sleepiness.

I want to share a particular interesting meditation that i stumbled upon in a science podcast i quite enjoy. I noticed that on days when i am extremely late for my daily meditation I have trouble to focus and stay awake. Means I get very sleepy during classic sitting meditation late in the day. When that happens a couple of times, I switch to the suggested STB Meditation from the podcast.

Which helps me greatly to keep awake and do -some- meditation practice, instead of breaking off and giving up entirely (which frustrates me greatly).

Feel free to share what you think, or what your favorite strategy against sleepiness is.