Question

how frequently should flexibility exercises be performed for best results? three times a week only before exercising daily once a week

Explanation:

In the context of fitness and health (related to Natural Science, subfield Medicine and Health), flexibility exercises are most effective when done daily to maintain and improve flexibility over time. Doing them only before exercising is insufficient for consistent improvement, three times a week or once a week is less optimal compared to daily practice for best results.

Answer:

daily