Begin by grabbing your ankles...
Hi,
I've been doing SS for a year now. I had to do a break for a month and a half because of work and despite I didn't drop any weight, I lost strength, my squat particularly suffered from the break and it took me another two month to get back to my previous squat number. I'm going to work in a remote place next year for about two month with no gym around. How can I keep my strength up with no equipment ?
Sorry if it's a common inquiry, I couldn't find the answer.
Begin by grabbing your ankles...
get a dufflebag and fill it with stuff until it is heavy and then squat it and press it and stuff. Pick up rocks or whatever too.
What is your current strength level?
For the lower body all you can really do is try to learn some pistol squat progressions and jumping/sprinting stuff. While not as good as barbell squats, you will probably find them (pistol, or one legged squats) difficult and far better than doing nothing for your legs. For reference, I can squat 2xBW and it would probably take me at least a month to do them perfectly.
For the upper body, however, there is a lot you can do. You can try to learn some basic gymnastic holds (L sits, Back lever), work on one arm or plyometric pushups, pullups and front lever holds, basic handbalancing skills (handstands), or even handstand pushups if you have a wall, you could probably find a way to make a temporary dip station, there are many possibilities...
Here are some good resources for bodyweight training:
[URL="http://www.eatmoveimprove.com/2010/3/the-fundamentals-of-bodyweight-strength-training/"]
http://www.beastskills.com/tutorials/
The book "Never Gymless" is pretty popular and has gotten a lot of positive feedback. You can also do a Pavel-type routine that focuses on high intensity bodyweight stuff... one arm pull ups, pistol squats, maybe handstand push-ups? But there's no real substitute for the gym. Keep up with the food and lift the heaviest stuff you can find when you have a chance.
EDIT - Kinski's suggestion about sprinting is great.
Your squats will suffer no matter what, but you can definitely maintain and even progress upper body and abdominal strength. Using methods suggested already (things on beastskills & rosstraining).
This is what I plan to use..
http://www.bodylastics.com/allproducts/