My friend Bill Ramsey tinkers with beta incessantly.
After all, a few sequences made fractionally easier could (and often do) make the difference between failure and sending.
The key though is to tinker with maximal effort.
If you are going to try something new, commit to trying 100%—anything less is a waste of precious energy and skin.
Eliminate effort as a factor by trying hard, every time.
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You can hear an interesting discussion I had about this in episode 13 of the podcast.
The Daily Nugget 