The "chair test" (sitting down and standing up from a chair without using your hands) is said to allow you to assess your overall state of health in 30 seconds.

noli's read

This test, scientifically known as the Sitting-Rising Test (SRT), evaluates muscle strength, balance, and flexibility. An observational study published in the European Journal of Cardiovascular Prevention showed a correlation between low SRT scores and higher all-cause mortality in older individuals. It is important to note, however, that this is an observational study: it shows an association but does not prove a direct causal link. Describing this test as a universal indicator for determining if one is "in good health" is an oversimplification. Health is multidimensional (cardiac, metabolic, mental) and cannot be summarized by a single physical capacity. The test is an interesting screening tool for functional physical fitness, but it does not replace a complete medical check-up.

the sources

1. 1Leong DP, Teo KK, Rangarajan S, et al. (PURE) 2015
2. 2Celis-Morales CA, Welsh P, Lyall DM, et al. 2018