Device for monitoring a state of a living being, comprising several sensors implemented for sweat analysis, a second sensor and an evaluation device, wherein a sensor implemented for sweat analysis is configured in such a way as to non-invasively generate a measurement value based on a content of ammonia in the sweat of the living being, and a further sensor implemented for sweat analysis is embodied identically, or a further sensor implemented for sweat analysis is configured in such a way as to generate a measurement value for a content of a component in the sweat of the living being other than ammonia, wherein the sensors implemented for sweat analysis may be positioned at different positions with different muscle groups of the living being, wherein the sensors implemented for sweat analysis each comprise an ion-selective electrode printed on a film, an ion-selective membrane, an ion-selective material in the form of an ionophore, a reference electrode and a counter electrode in a mixture with network-forming materials, wherein the second sensor is configured in such a way as to generate a measurement value with respect to the respiration or the cardiac activity of the living being, wherein the sensors implemented for sweat analysis and the second sensor are arranged in a carrier device wearable at a body of the living being, and wherein the evaluation device is configured in such a way as to generate a scalar measure of a stress of the living being based on the measurement values of the sensors implemented for sweat analysis and the measurement value of the second sensor, wherein the evaluation device correlates a measurement value of at least one sensor implemented for sweat analysis with a measurement value of the second sensor. comprising several sensors implemented for sweat analysis, a second sensor and an evaluation device, wherein a sensor implemented for sweat analysis is configured in such a way as to non-invasively generate a measurement value based on a content of ammonia in the sweat of the living being, and a further sensor implemented for sweat analysis is embodied identically, or a further sensor implemented for sweat analysis is configured in such a way as to generate a measurement value for a content of a component in the sweat of the living being other than ammonia, wherein the sensors implemented for sweat analysis may be positioned at different positions with different muscle groups of the living being, wherein the sensors implemented for sweat analysis each comprise an ion-selective electrode printed on a film, an ion-selective membrane, an ion-selective material in the form of an ionophore, a reference electrode and a counter electrode in a mixture with network-forming materials, wherein the second sensor is configured in such a way as to generate a measurement value with respect to the respiration or the cardiac activity of the living being, wherein the sensors implemented for sweat analysis and the second sensor are arranged in a carrier device wearable at a body of the living being, and wherein the evaluation device is configured in such a way as to generate a scalar measure of a stress of the living being based on the measurement values of the sensors implemented for sweat analysis and the measurement value of the second sensor, wherein the evaluation device correlates a measurement value of at least one sensor implemented for sweat analysis with a measurement value of the second sensor.