I went for a power walk with a stop at the local store and somehow came out with several kilos of potatoes, bananas, a pineapple, yoghurt and 24 eggs.
The rucksack was completely full, with the eggs sticking out of the top. So the walk home became a different kind of training session. Balance the rucksack, keep the eggs from falling out, and coordinate every step so the potatoes and bananas did not crush them.