The hamstrings are in a connected line of pull from the pelvis via the sacrotuberous ligament structure to the sacrum, up the back extensor muscles all the way over the skull to the eyebrows. Also in the opposite direction, the hamstrings are part of a line of pull that connects down to the plantar surface of the feet. The hamstrings and muscles of the back body create a line of pull that keeps us upright and the tension in the back keeps the shock absorbing curves strung.
If you store them in air-tight bottles that are not opened day-in day-out, you can expect your e-juice to last anywhere from 12 to 24 months. However, there are other factors in play like the purity of the nicotine used, the quality of the flavoring and the manufacturing process.
The good news is that home heating oil should last 18 to 24 months, as long as effective additives were mixed with it upon delivery. The most common variety, known as No. 2 heating oil, is essentially the same product as diesel fuel, except diesel has additives intended to boost effectiveness in motor vehicle engines during cold weather.