Donate blood to a blood bank!

Eat a meal by yourself while doing nothing else focusing only on the food

Hold a plank position for 5 continuous minutes

Visit a church of a faith different from your own (Mormon Catholic Buddhist etc.)

Use only your non-dominant hand for all tasks for one full waking day

Do a cold plunge in cold water

Write your top 10 values and make one small ongoing life change to better align with your values. https://qualitycharters.org/wp-content/uploads/2016/10/Hiring-For-Fit_Values-List.pdf

Complete a certified class in CPR first aid or emergency response (e.g. Red Cross or community college)

Spend 24 hours without phones computers or internet

Take creatine or a supplement you've been meaning to try every day for a month

Travel to visit another Big Year participant in their home city and spend meaningful time together.

Replace your regular shower with a cold shower every day for 30 consecutive days

Run 1 full mile completely barefoot

Don't use or buy anything containing plastic for two weeks

Complete a dedicated stretching session of 10+ minutes every day for 30 consecutive days

Track what you do each week on a life calendar for 6 months filling boxes with weekly highlights

Choose a personal metric (mood - sleep - spending - steps - etc.) - track it daily for at least 6 months - and give a presentation on your findings