ABC News medical contributor Dr. Darien Sutton answers a question from a viewer about what to do and things to avoid after donating blood. SUBSCRIBE to GMA's YouTube page: https://bit.ly/2Zq0dU5 VISIT the GMA3 homepage: https://bit.ly/3kNlst8 FOLLOW GMA3: Facebook: / abcgma3 Twitter: / abcgma3 Instagram: / abcgma3 #gma3 #blooddonation #drdariensutton