[ExI] back pain

[William Flynn Wallace]

Use a rolled up towel at the small of your back. Well, everyone knows that.
Here's a better way:

Get a yoga mat (you probably have one lightly used?), about 1/4" thick.
Roll it up as tightly as you can and tape it shut with packaging tape.
Just the right amount of support and very comfortable compared to a towel.
  bill w
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