Unlike some trickier fruits, berries are relatively easy to judge for ripeness. Their color is a good indicator, but, as the Kitchn points out, there are some subtle signs that berries are about to spoil. Oddly enough, the container can be an indicator of a berry gone bad. They explain:
So, you finally picked up a Raspberry Pi and it’s sitting on your desk, waiting for you to do something awesome with it. Good news, setting it up is stupid-easy these days, and in less than 30 minutes, you’ll be hacking away on your tiny little $35 computer.
Your head position and where you look during a squat have very subtle benefits. You’ll be able to keep your balance throughout the exercise better, concentrate on your lift better, and be more consistent with performing the exercise the same way every time.