I have found that when I use only part of a bell pepper, it keeps longer if I first use the flesh from the bottom or sides of the pepper. I cut of slices from the sides, leaving the top and core intact. The core and seeds seem to keep the pepper from beginning to spoil.
I learned the hard way that when handling raw butternut squash (or any other orange squash) that it's a good idea to wear latex gloves. Butternut squash has enzymes that can act like a chemical skin peel. My fingers turned orange and the skin got really tight and then started peeling over the next...
Eating healthy can take a lot of prep time. I cut up and prepare salad fixings for 2-3 days at a time. I make bags of chopped cucumbers, tomatoes, etc. and keep them ready for a fast, delicious salad. Just grab a serving from each bag and add to your plate. Yum!