Bruno Pontes, an ACSM- and AFAA-certified personal trainer at Muscle Booster in California, shared what the sit-to-stand test actually measures and why experts consider it a strong indicator of fitness. While there are several iterations of the sit-to-stand test, the 30-second chair stand test is the go-to exercise endorsed by public health organizations like the CDC, the expert noted. Advertisement AdvertisementThe sit-to-stand test is easy to perform at home, Pontes said, as the only thing needed is a sturdy chair. The sit-to-stand test is easy to perform at home, as the only thing needed is a sturdy chair. Original article source: Forget the gym: A 30-second test may be one of the best indicators of longevity