Deny self in terms of physical denial is a religious way of becoming pure that false religions teach. But deny self for Christians is denial of self interest and is not a physical denial. Please see below definition:
Deny Self
Matthew 16:24 Then Jesus said to His disciples, “If anyone desires to come after Me, let him deny himself, and take up his cross, and follow Me.
16:24 Then 5119 said 2036 5627 Jesus 2424 unto his 846 disciples 3101, If any 1536 [man] will 2309 5719 come 2064 5629 after 3694 me 3450, let him deny 533 5663 himself 1438, and 2532 take up 142 5657 his 846 cross 4716, and 2532 follow 1
Word: aparneomai Pronounce: ap-ar-neh'-om-ahee Strongs Number: G533 Orig: from 575 and 720; to deny utterly, i.e. disown, abstain:--deny. G575 Use: TDNT-1:471,* Verb Heb Strong: H3988
1) to deny
1a) to affirm that one has no acquaintance or connection with someone
1b) to forget one's self, lose sight of one's self and one's own interests
Deny Self
Matthew 16:24 Then Jesus said to His disciples, “If anyone desires to come after Me, let him deny himself, and take up his cross, and follow Me.
16:24 Then 5119 said 2036 5627 Jesus 2424 unto his 846 disciples 3101, If any 1536 [man] will 2309 5719 come 2064 5629 after 3694 me 3450, let him deny 533 5663 himself 1438, and 2532 take up 142 5657 his 846 cross 4716, and 2532 follow 1
Word: aparneomai Pronounce: ap-ar-neh'-om-ahee Strongs Number: G533 Orig: from 575 and 720; to deny utterly, i.e. disown, abstain:--deny. G575 Use: TDNT-1:471,* Verb Heb Strong: H3988
1) to deny
1a) to affirm that one has no acquaintance or connection with someone
1b) to forget one's self, lose sight of one's self and one's own interests