shadowbox

[shad-oh-boks]

verb (used without object)

to make the motions of attack and defense, as in boxing, as a training or conditioning procedure.
to evade or avoid direct or decisive action.

Origin of shadowbox

First recorded in 1915–20; shadow + box²

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Around this time, Tyson would smoke weed with his friends and watch them shadowbox.
Mike Tyson Opens Up About His Rape Conviction, Brad Pitt, and Love of Pinkberry
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November 6, 2013