Forwarded from 全民健身channel
解鎖自由式(黃埔)
開團地點: 黃埔大環山游泳池
日期：23/6 星期三
時間: 7:15pm集合, 7:30pm 入場，9:30落堂
人數: 4人
報名: PM @HKFreeNow51
1. 入場需登記姓名、電話，請確保你寫既電話即場打得通
2. $5 入locker
3. 帶毛巾，池面拖鞋
4. 戶外池1.1 – 1.4M，海風有時清勁，射燈好曬注意防曬
5. 泳鏡有就帶，無唔駛特登買
6. 識游跟機，名額不限，報名時註明
#泳班 #游水 #自由式 #黃埔
開團地點: 黃埔大環山游泳池
日期：23/6 星期三
時間: 7:15pm集合, 7:30pm 入場，9:30落堂
人數: 4人
報名: PM @HKFreeNow51
1. 入場需登記姓名、電話，請確保你寫既電話即場打得通
2. $5 入locker
3. 帶毛巾，池面拖鞋
4. 戶外池1.1 – 1.4M，海風有時清勁，射燈好曬注意防曬
5. 泳鏡有就帶，無唔駛特登買
6. 識游跟機，名額不限，報名時註明
#泳班 #游水 #自由式 #黃埔
Forwarded from 全民健身channel
解鎖自由式(黃埔)
開團地點: 黃埔大環山游泳池
日期：23/6 星期三
時間: 7:15pm集合, 7:30pm 入場，9:30落堂
人數: 4人
報名: PM @HKFreeNow51
1. 入場需登記姓名、電話，請確保你寫既電話即場打得通
2. $5 入locker
3. 帶毛巾，池面拖鞋
4. 戶外池1.1 – 1.4M，海風有時清勁，射燈好曬注意防曬
5. 泳鏡有就帶，無唔駛特登買
6. 識游跟機，名額不限，報名時註明
#泳班 #游水 #自由式 #黃埔
開團地點: 黃埔大環山游泳池
日期：23/6 星期三
時間: 7:15pm集合, 7:30pm 入場，9:30落堂
人數: 4人
報名: PM @HKFreeNow51
1. 入場需登記姓名、電話，請確保你寫既電話即場打得通
2. $5 入locker
3. 帶毛巾，池面拖鞋
4. 戶外池1.1 – 1.4M，海風有時清勁，射燈好曬注意防曬
5. 泳鏡有就帶，無唔駛特登買
6. 識游跟機，名額不限，報名時註明
#泳班 #游水 #自由式 #黃埔
Forwarded from 全民健身channel
解鎖自由式(黃埔)
開團地點: 黃埔大環山游泳池
日期：23/6 星期三 因天雨改期至30/6
時間: 7:15pm集合, 7:30pm 入場，9:30落堂
人數: 4人
報名: PM @HKFreeNow51
1. 入場需登記姓名、電話，請確保你寫既電話即場打得通
2. $5 入locker
3. 帶毛巾，池面拖鞋
4. 戶外池1.1 – 1.4M，海風有時清勁，射燈好曬注意防曬
5. 泳鏡有就帶，無唔駛特登買
6. 識游跟機，名額不限，報名時註明
#泳班 #游水 #自由式 #黃埔
開團地點: 黃埔大環山游泳池
日期：23/6 星期三 因天雨改期至30/6
時間: 7:15pm集合, 7:30pm 入場，9:30落堂
人數: 4人
報名: PM @HKFreeNow51
1. 入場需登記姓名、電話，請確保你寫既電話即場打得通
2. $5 入locker
3. 帶毛巾，池面拖鞋
4. 戶外池1.1 – 1.4M，海風有時清勁，射燈好曬注意防曬
5. 泳鏡有就帶，無唔駛特登買
6. 識游跟機，名額不限，報名時註明
#泳班 #游水 #自由式 #黃埔
Forwarded from 全民健身channel
全民健身channel
全民健身活動精選 ❣️ 星期四 15/7 💛 7:00pm 屯門體能班 💛 7:30pm 跑馬地跑團 ❣️ 星期五 16/7 💛 7:30pm 屯門戶外boxing ❣️ 星期一 19/7 💛 7:30pm 荃灣西體能班 💛 7:30pm 荃灣西boxing circuit training 🆕week 5 ❣️ 星期二 20/7 💛 7:00pm 屯門體能班 ❣️ 星期三 21/7 💛 晚上 何文田戶外體能班 觀塘海濱及跑馬地跑班暫停至另行通知。九龍灣運動場將不定期開團，詳情可留意channel…
【水の科學：游水點先游得快🏊♀️？】
東京奧運即將揭幕，全球各地都掀起一股體育熱潮！夏日炎炎，其中一種最受歡迎嘅運動就係游水！但究竟點樣游，先可以有姿勢又有實際？除咗堅持每日練習之外，大家都可以試吓用科學嘅方式，了解點樣調整自己嘅泳姿來減少水中阻力！
根據流體力學，流體嘅密度或身體橫切嘅面積越大，阻力就會隨之增加。水嘅密度比空氣高800倍，所以如果我哋喺水底跑步，阻力亦會比地面跑步大800倍😲！
所以游水嘅時候，一方面要增加推進力，另一方面要減少水阻，先可以游得快啲😎！只要我哋游水時令身體接近水平，就可以減少橫切面積，從而減少水阻。以自由式嚟講，個頭可以盡量向下，減少雙腳打水嘅幅度，令下半身更靠近水面；划水週期中保持至少一隻手掌喺頭部前面，身體嘅重心就會靠前，雙腳都會比較接近水面，咁橫切面積細咗，水阻自然減少，就可以游得快啲喇😉！
[The science behind fast swimming ]
The Tokyo Olympics is about to begin! Are you prepared for the coming wave of sports games? Swimming is one of the most popular sports during summer time, but do you know there is a lot of science behind swimming? We can reduce the drag or water resistance by learning science!
According to fluid mechanics, the greater the density of the fluid and the cross-sectional area of the body, the greater the resistance. The density of water is 800 times higher than that of air. If we run underwater, the resistance will be 800 times greater than running on land.
To achieve a good swimming record, we need to reduce the drag and increase the thrust.
As long as we stay horizontal when we swim, we can minimise the cross-sectional area and hence reduce the drag. Using freestyle as an example, try to keep the head down, and reduce the amplitude of the kicking. This allows the lower part of body to be closer to the water surface. Keep at least one hand in front of the head during the stroke. The centre of mass of the body will move forward, and the legs will be closer to the water surface, hence minimise the cross-sectional area and the drag, allowing us to swim much faster!
#香港科學館 #科學情報站 #東京奧運 #運動 #游水 #水阻 #歡迎大家分享游水心得
東京奧運即將揭幕，全球各地都掀起一股體育熱潮！夏日炎炎，其中一種最受歡迎嘅運動就係游水！但究竟點樣游，先可以有姿勢又有實際？除咗堅持每日練習之外，大家都可以試吓用科學嘅方式，了解點樣調整自己嘅泳姿來減少水中阻力！
根據流體力學，流體嘅密度或身體橫切嘅面積越大，阻力就會隨之增加。水嘅密度比空氣高800倍，所以如果我哋喺水底跑步，阻力亦會比地面跑步大800倍😲！
所以游水嘅時候，一方面要增加推進力，另一方面要減少水阻，先可以游得快啲😎！只要我哋游水時令身體接近水平，就可以減少橫切面積，從而減少水阻。以自由式嚟講，個頭可以盡量向下，減少雙腳打水嘅幅度，令下半身更靠近水面；划水週期中保持至少一隻手掌喺頭部前面，身體嘅重心就會靠前，雙腳都會比較接近水面，咁橫切面積細咗，水阻自然減少，就可以游得快啲喇😉！
[The science behind fast swimming ]
The Tokyo Olympics is about to begin! Are you prepared for the coming wave of sports games? Swimming is one of the most popular sports during summer time, but do you know there is a lot of science behind swimming? We can reduce the drag or water resistance by learning science!
According to fluid mechanics, the greater the density of the fluid and the cross-sectional area of the body, the greater the resistance. The density of water is 800 times higher than that of air. If we run underwater, the resistance will be 800 times greater than running on land.
To achieve a good swimming record, we need to reduce the drag and increase the thrust.
As long as we stay horizontal when we swim, we can minimise the cross-sectional area and hence reduce the drag. Using freestyle as an example, try to keep the head down, and reduce the amplitude of the kicking. This allows the lower part of body to be closer to the water surface. Keep at least one hand in front of the head during the stroke. The centre of mass of the body will move forward, and the legs will be closer to the water surface, hence minimise the cross-sectional area and the drag, allowing us to swim much faster!
#香港科學館 #科學情報站 #東京奧運 #運動 #游水 #水阻 #歡迎大家分享游水心得