D3 Multisport is proud to release the video series, "The Triathlon Minute". Invest 1 minute each Friday and you may learn something you didn't know.  

Do you understand the difference between muscle activation and a warm-up? Coach Martina does! She explains it in this week's tip, plus, she shares a specific example of muscle activation for your core.

D3 coaches have a library of training tips and articles for your reference at D3 U.