What does it take to be a NASCAR jackman? We went inside Hendrick Motorsports with Allen Holman, jackman for the No. 24 Chevrolet, to see how he trains for the strength, speed and explosiveness needed to get a Cup Series car off the ground in the middle of a pit stop. Subscribe to NASCAR on YouTube: https://nas.cr/youtube ---------- Follow NASCAR: Instagram https://www.instagram.com/nascar/ TikTok https://www.tiktok.com/@nascar X https://twitter.com/nascar Facebook https://www.facebook.com/NASCA…