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The next time someone tells you your abs are "weak", get them to read this #minimalactivity http://t.co/L2ieweWBFa http://t.co/cU8G8pDPgZ
The next time someone tells you your abs are "weak", get them to read this #minimalactivity http://t.co/L2ieweWBFa http://t.co/cU8G8pDPgZ
The next time someone tells you your abs are "weak", get them to read this #minimalactivity http://t.co/L2ieweWBFa http://t.co/cU8G8pDPgZ
Trunk muscle activity while lifting objects of unexpected weight http://t.co/t6uO6Vzh