: @kariofitness dared me to try this #TRX stability ball challenge. I warmed up a little and was able to get this video. This is 1 of the tougher moves I've tried on the TRX. #trxplank #trxpike #trxpushup #trxstabilityball #stabilityball #movemorefitness @palanimakfitness @trxtraining