1 Meniscal tear: Damage to a meniscus, the cartilage that cushions the knee, often occurs with twisting the knee. 2  Large tears may cause the knee to lock. 3  ACL (anterior cruciate ligament) strain or tear: The ACL is responsible for a large part of the kneeâs stability.
During the warmer months, the thermostat to an air conditioner should be set at 78 degrees Fahrenheit. If this is not comfortable, some experts recommend lowering the temperature to no less than 74 degrees to avoid high utility costs.
The best air conditioning temperature for sleeping is whatever you can get by on with just a sheet over you. If you have the air conditioner set so low that you need pajamas and a comforter, you have it set too low. Try working your way up from that 82F to 84F, 86F, or even higher.