Over the next year I want to try some low-intensity daily experiments to see if they have noticeable and positive effects: Things like cold showers, a gratitude journal, cutting sugar, etc. My working plan is to do one per month for a two-week stretch, to use the other two weeks of the month as the closest I can get to a control, and to track my mood and any other relevant metrics each day. Obviously it's hard to get reliable data from these, but are there ways I could increase the likelihood of extracting good information from the noise?
Please pardon the late reply. I've modified the plan to two months each for a gratitude journal, cold showers, meditation, and cutting sugar. Thank you for sharing your own experiences!
Cold showers: I'm curious about the distance between how people swear by them and the inconclusive research - and, like you said, there's no obvious harm. When I've done them in the past I've noticed an energy boost in the hours afterwards, but I've been unable to push myself to keep them up when autumn hits. So this will be a summer experiment.
Sugar: I once cut sugar (all sweets, though not all added sugars) for roughly two months and felt like I noticed the disappearance of big energy drops. This time I want to see what else comes of it.
Gratitude journal: Given the research behind it, this seems obviously worth the effort, and is what I'm doing right now. It seems like there's evidence that writing 1-3 times a week gives better results, but I'm doing it daily for the habit formation.
Other than that, I don't have much to reply beyond appreciating the personal reference points, the meditation links, and the encouragement!