Can one say<br/><span style="color:#ff0000;">a. This breathing exercise is for relaxing.</span><br/><span style="color:#ff0000;">b. This breathing exercise is to relax.</span><br/><br/><span style="color:#ff0000;">c. This breathing exercise is for becoming relaxed.</span><br/><span style="color:#ff0000;">d. This breathing exercise is to become relaxed.</span><br/><br/>Many thanks.