Captioning the post, Chris urged his 59.3million followers to get out there and 'crush it'. '28 different arm workouts for 28 days straight! Great work by the @centrfit team to create this awesome ...

Now’s the time to start getting those gains and, luckily, Chris Hemsworth has just posted the ... be left untouched as this workout hits your biceps, triceps, chest, back, and shoulders.