With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Marcus Rashford is from London.
text_B: Kegel exercise , also known as pelvic floor exercise , consists of repeatedly contracting and relaxing the muscles that form part of the pelvic floor , now sometimes colloquially referred to as the `` Kegel muscles '' .. pelvic floor. pelvic floor. The exercise needs to be performed multiple times each day , for several minutes at a time , for one to three months , to begin to have an effect .. Exercises are usually done to reduce urinary stress incontinence -LRB- especially after childbirth -RRB- and reduce premature ejaculatory occurrences in men , as well as to increase the size and intensity of erections .. urinary stress incontinence. Stress incontinence. premature ejaculatory. Premature ejaculation. Several tools exist to help with these exercises , although various studies debate the relative effectiveness of different tools versus traditional exercises .. They were first described in 1948 by Arnold Kegel .. Arnold Kegel. Arnold Kegel
not_related.