30 day Plank Challenge. 42176 likes · 8 talking about this. The 30 Day Plank Challenge will send your core strength through the roof! Day 1 - 20 seconds... ... <看更多>

Jun 23, 2018 - Join the 30-day plank challenge to build a stronger core in just a month's time. With every plank workout and plank exercise routine, ... ... <看更多>