Daily backpacker budget: $20 ~ $35. Bolivia is the ultimate cheapie of South America. Things may be very basic here as itâs a dirt poor country but your dollars sure go a long way. It is the cheapest country for accommodation and the cheapest for food and drink as well.
The plank strengthens the abdominals, back, and shoulders. Muscles involved in the front plank include: 1  Primary muscles: erector spinae, rectus abdominis (abs), and transverse abdominus.he plank strengthens the abdominals, back, and shoulders. Muscles involved in the front plank include: 1  Primary muscles: erector spinae, rectus abdominis (abs), and transverse abdominus.
From the Adductor Hallusic of the big toes to the traps, planks almost have no limits. In essence planking is the act of suspending the body above ground somehow and using the muscles (along with leverage) to fight against gravity. SEE ALSO: The Plank Exercise â What You Need to Know.Furthermore, typical planks are considered a stationary exercise. Most people donât do other things while they plank.nstead, they look a lot like the guy in this explanation of how to do a plank. 1  The conventional plank is considered to be a core exercise and there are four ways to do it on the ground: front, both sides for the obliques and then reverse where the glutes face downward.