Grip Strength: Rest Day By Jason Jaksetic · April 01, 2017 Presented by Spartan Training® Share Facebook Share on Facebook Tweet Tweet on Twitter Pin it Pin on Pinterest Whatsapp Share on Whatsapp Email Today is a rest day. Take some time to review these grip-based obstacle tutorials: Ape Hanger Spartan Ladder Rope Climb Monkey Bars Grip Strength Workout of the Day Jason Jaksetic Jason Jaksetic is an SGX coach and a go-to guy for all things involving a Spartan lifestyle. He enjoys doing Ultra-Beasts and Double Anvil Triathlons (4.8 mile swim, 224 mile bike, 52.4 m run). He once lived in a barn and really enjoyed it.