| CPC A61H 9/0092 (2013.01) [A61H 9/0085 (2013.01); A61H 11/00 (2013.01); A63B 21/0085 (2013.01); A63B 21/4025 (2015.10); A63B 23/12 (2013.01)] | 15 Claims |

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1. A method of training, the method comprising:
conducting a training exercise;
capturing, via a sensor, data during the training exercise, wherein the data comprises heart rate and heart rate variability (R-R′) data;
determining, at least in part from the R-R′ data, heart rate variability for a user in connection with the training exercise; and
determining, based at least in part on the captured data and the heart rate variability, efficacy of the training exercise for the user.
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