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.
Or should I sayâ¦WHEN planks cause back pain, your form is off! You should be doing planks. Its just that you should be doing them correctly. It is the basis of all movements in my opinion. By planking correctly, you can transfer this neural recruitment pattern to most other movements and exercises. Unfortunately, most people know how a plank should look, they just donât execute it correctly.