Connecting computer peripherals, like plugging your smartphone into a desktop or laptop might include USB-C like this 2022 MacBook M2 MacBook Pro that only has 2 input output USB-C ports, incidentally that broke & I had to take it back to the Apple Store in Bellevue Square Mall to have it fixed for about $100 / since that's is also the only way to get power into it in order to charge the long lasting battery.
Apple Silicon Power Efficiency Amazing
I say long lasting because this thing has amazing all day battery life compared to perhaps an hour or so on the 2020 F17 Asus gaming laptop. That is in part because this MacBook Pro M2 chip contains the SOC CPU & GPU cores & was made on TSMC's flagship ASML chip making such that the power efficiency blows the Intel NVIDIA chip combo in my gaming laptop out of the water, then again that machine has superior gaming performance via Windows 11 Steam and Counterstrike 2 :)
Signals Entering Your Brain
Your brain has things plugged into it, namely your ears to sense sound pressure waves in the air near your head, to see photons bouncing off other things in the fovea of the retina of your eyes, from your nasal bulb & tongue in your mouth to taste & smell via liquid gas chromatography sensing, & the proprioception from the nerves & muscles for both sensing & control for touch, balance & coordination so that you can move and do any of the myriad of possible things a person is able to do.
USB History vs Type C Power Confusion
USB-A was that rectangular strong one way USB connector that's been on computers since 1996, with many charging cables or connection cables of many kind, its bigger & far more robust than that stupid micro-usb on so many android phones & similar for so long. While Apple went from USB-A to 30 pin then USB-A to lightning, now USB-C to lightning & USB-C to USB-C, or firewire too, USB-C with its flip & use either way connections only confused by power levels of different cables. Please excuse the detailed comparisons, but it requires understanding to prevent wire fires with USB-C cables.
USB Type-C basic alone ports 5 volts 3 amps or (V)(A)=(P) 15 Watts
USB-C PD up to 20 volts 5 ams or 100 watts
USB-C PD 3.1 up to 48 volts 5amps or 240 watts
HDMI kind of like your optic nerves connecting both eyes & cholera nerves in both ears, to pipe video & sound signals into your brain a high bit rates.
Food energy combined with CNS control of movement, thinking, muscles & balanced to get, prepare & eat or drink things for metabolic fuel, similar to the high power levels & data speeds of USB-C PD
Human Energy Levels
The typical human body runs at about 100 watts of energy, slightly less when sitting resting or sleeping, slightly more when walking, working out, and in fit athletes can scale to a sustained 250 watts for a few hours, while peak human output in very fit olympic athlete young men in their early 20's can hit 1000 watts for 10 seconds, and hold 700 watts for up to 30 seconds.
Human Battery Life
A human has a typical daily runtime of 16 hours with an 8 hours sleeping window & 7 hours of actual sleep, which varies considerably since young children can sleep 16 hours or more & very old people can barely sleep for 5 hours per night. The body energy levels in a young small child & very old person are much lower than that of a fit olympic athlete or elite performer in peak physical shape.
Age, Activities, & Calories Required
In my early twenties I was hyperactive & could easily eat 8000+ calories per day in 5 huge meals, without feeling bloated or full & kept a tight muscular 155 lb body mass at 5 ft 11 inches tall, and would wake at 5 am & go full steam until 11 pm every day :) Now I am 41 years old & can get away with eating 3200 calories on slow days & need 4600 calories on high output days, & can slow my metabolism even more if I deliberately rest & barely move all day, I can get away with 2000 calories & if I am very careful to not move hardly at all, 1500 calories.
Estimating Metabolic Rate
I am able to indirectly measure my metabolic rate & calories required by careful body mass measurement compared to VO2 max, breathing rate, heart rate, skin temperature & other health variables I track with Ringconn Smart Ring & Apple Watch Series 8, to iPhone Health & Fitness Apps, then compare that to what I am eating in terms of macros, while I mostly focus on micronutrients lately to get all the essential vitamins & minerals.
Sleep Health Reflections
I try to get at least 4 complete sleep cycles with deep sleep & possibly a few more light sleep cycles for rest, in bed for at least 9 hours to get at least 7 hours of total sleep, & able to work ok on 5 hours of sleep, but do better with 6 hours & feel even better with 7 hours, its really about getting more deep sleep time, though the increasing in REM time lately makes the dreaming even more interesting, even though its totally random, I mean the content of the dreaming completely random.
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