Arshdeep Singh says clarity of mind, attained through yoga and meditation, has helped him perfect the art of bowling yorkers, a rare ability that has pushed him into the Indian T20 side for the South Africa series. The 23-year-old from Kharar humbly accepts the success that has come his way in the IPL but says he really had to "earn everything". It may seem that landing yorkers, at will, comes naturally to the lanky fast bowler but he put in the extra work with his personal coach Jaswant Rai ahead of the IPL to hone his coveted skill. Yoga and meditation has also helped him stay calm in high-pressure scenarios. "It (meditation) clears the mind. When there is pressure, there is no substitute to clarity. Being able to stay calm surely helps in a big way," Arshdeep told PTI.