Article continues below advertisementAl Roker expressed gratitude for the blood donations he received during his health struggles, particularly emphasizing the support from his Today coanchor Craig Melvin."I'm a living example of being a recipient of those donations during my health issues," Roker, 70, shared on the Today show on Monday, July 28, after Melvin, 46, donated blood live on-air to inspire others to take action.Article continues below advertisementSource: NBCCraig Melvin joked he wanted his blood 'earmarked' for Al Roker during a live donation.