Well this is just pure genius. A new line of denim shorts and sleeping bags have been invented (by someone way smarter than I am) that use body heat and movement to generate electricity.
The "Power Shorts" and "Recharge Sleeping Bag" can charge a phone's battery by getting energy from the human body.
The wearable phone chargers have been designed by mobile phone company, Vodafone.
The shorts are fitted with a phone connector and materials that produce a charge whenever you move.
So what is the science behind all of this? It works by harvesting thermal energy from the sleeper's body heat. That charge is then used to power up your battery, and keep the phone charged.
I mean, I can't get into a pair of these fast enough.
Read more here.