1. A method of MR (=magnetic resonance) imaging and spectroscopy for reducing artifacts occurring due to motion of an object being imaged in an MR tomograph, the method comprising the steps of: a) monitoring an object position during a runtime of MR acquisition, the MR acquisition having one or more partial acquisitions (TA); b) performing motion correction through dynamic adaptation of frequency and phase settings of an RF (=radio frequency) system of the tomograph and through orientations and amplitudes of gradients during the runtime of the MR acquisition and in dependence on changes in the object position monitored in step a), the motion correction being applied between and/or during a signal weighting period and a signal read-out period, wherein the dynamic adaptations are performed without interrupting or slowing a temporal progression of the MR acquisition; and c) repeating step b) at least once during the runtime of the MR acquisition, wherein long partial acquisitions (TA) are divided into shorter partial acquisition partitions (TAP) and long gradients that extend in time over a boundary between two consecutive partial acquisition partitions (TAP) are divided into shorter partial gradients in such a way that each partial gradient is only switched during a single partial acquisition partition (TAP).