I have a heavy'ish sandbag which i take out for a walk once in a while. So far I've been walking with my friend as she takes her dog out.
First you estimate the bags weight, "feels ok" you think and try to clean it. Hard as ****, ok no whining, let's go, and you try to somehow get the tricky unsolid bag on your shoulders.
First half a minute passes and you think to yourself why on earth would you like to do something like this. The bag never settles down, you never find a good position to carry it. When you get a feeling that you found a good position to hold it, after 10-20 seconds your shoulder, traps and core muscles start getting tired and you need to change the position again.
And there are only so many ways to carry a sandbag!
After 10 minutes of slow walk your whole body is starting to get tired and you are soaked in sweat. The focus starts narrowing down to shorter and shorter distances and time frames. Just make that next step, just get a bit further still, just hold it in this position 10 more seconds...
Your fingers start getting sore from trying to hold on to the bag and stabilize it, your shoulders are done, there's no way you can carry anything there anymore. Forearms are aching from bearhugs and zercher style holds. Your abs and obliques are getting tired and your step is getting heavier too.
And then she decides to take a small detour! It's only a few minutes longer, she says and starts walking through a park.
Greatly recommend it guys!