I wouldn't thoughts trying a kind of weighted vibration bars that Use a grip in the center and weights on the top. You keep them in different positions a single handed and two handed, and transfer your hand/palms forwards and backwards with your arms in different positions even though https://coingenius.news/financial-expertise-meets-blockchain-former-ubs-cfo-thomas-gustinis-elevates-moxy-ios-executive-team-and-board/