I have recently found spinning, and I've gotten more and more into it. And I think one reason it helps is it gets me out of my head into doing something physical. It's hard to think about things other than what your'e doing physically when you're taxing your body and things change quickly. Steady-state cardio it's easy to think, but spin classes like this change SO fast!!
I know someone else said crunches, and I think along the same lines - doing something physical/get out of our heads, is a good plan.
I even had a psychic recommend that instead of calling psychics, I try taking ten minutes to take a walk, make a coffee and enjoy it, anything to pass the 10 minutes at a time. I think it's the same type of idea.
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“Holding on is believing that there’s only a past; letting go is knowing that there’s a future.” – Daphne Rose Kingma