To find Cherise's heart rate in beats per minute (bpm), we can start with the information given: her heart beats 56 times in \( \frac{1}{3} \) of a minute.
To find out how many beats she has in a full minute, we can multiply the number of beats in \( \frac{1}{3} \) of a minute by 3:
\[ \text{Beats per minute} = 56 \text{ beats} \times 3 \]
Calculating this gives:
\[ 56 \times 3 = 168 \text{ beats per minute} \]
Therefore, Cherise's heart beats 168 times per minute.